UA108110C2 - HAIR DYING DEVICE AND SCREEN - Google Patents

Abstract

The hair dye device includes a screen 220, made with the possibility of penetration into the hair, contains an array of teeth and has an upper 280 and lower 290 surfaces. For most teeth, the cross section of each tooth (such as a triangular shape) has an asymmetric width profile, so that on average, the tooth cross section is narrower at the apex of the tooth and wider at the base of the tooth. The ratio between i) the first average tooth width, describing the average tooth width below the mean between the apex and the base of the point; and ii) a second average tooth width describing an average tooth width above the median between the apex and the base of the point is at least 1.2 or at least 1.6. For the implementation of the present invention, the non-binding reagent for dyeing hair is distributed in the form of an aerosol on the upper surface of the screen so as to dye the root hair of the user passing through the spaces between the teeth, and close to each other teeth of the screen through which the hair passes, protect the skin of the scalp of the wearer from the effects of a dyeing reagent.

Description

Field and level of technology

Variants of the implementation of this invention relate to the application device for hair dyeing and to the accompanying method of hair dyeing.

Specific embodiments of the present invention can be used for temporary coloring of graying hair, for example, hair roots or areas near them.

Hair dyes are commonly used to hide gray and white hair, usually caused by aging, and to change other hair colors to suit personal taste.

Hair dyes can be roughly classified into several types, although different types of hair dyes may be used in combination, and some hair dyes may not be clearly related to any one type (Apdegzop, U. Bos. Juuege Soiogiviisv, 116:193-196 (2000); 2/aKk apa Miediapi, (2miaKk, Spapevz; MiPedtsapi, Ueap. Editor(s): WashShop, Siatsae;

UMiKipzop, Ph.D. The Science of Hair Care (2nd ed.) (2005), 251-275. Publisher: SAS Rgez5 11 C,

Boca Raton, Florida).

Long-lasting dyes are usually made by mixing a small amount of aromatic starting compounds with an oxidizing agent, usually hydrogen peroxide. After oxidation, a covalent reaction of the starting compounds with each other occurs with the formation of a dye. Small molecules of the parent compounds can diffuse into the hair more efficiently than large molecules of the dye can diffuse out of them. Also, an alkalizing reagent, usually ammonia, is added to swell the hair, which ensures maximum penetration of the original compounds into the hair. In addition, hydrogen peroxide bleaches the original hair color, thereby providing the possibility of completely replacing the original hair color with the color of the dye. Long-acting dyes are quite popular, but they have disadvantages related to the difficulty of correctly mixing and applying the starting compounds, as well as the use of potentially harmful reagents. Thus, long-lasting dyes are usually used by professional hairdressers and stylists. In addition, even long-lasting dyeing cannot hide the original hair color, which inevitably reappears as a result of hair growth.

Semi-permanent dyes are similar to long-term dyes, but use lower concentrations of hydrogen peroxide and an alkalizing agent that is less effective than ammonia but has a less unpleasant odor. Thus, semi-permanent dyes are less effective at penetrating the hair and bleaching the original hair color and cannot be used to effectively dye predominantly gray or white hair. However, the comparative mildness of such coloring agents makes them desirable when less effective coloring is sufficient, for example, when gray or white hair is in the minority.

Semi-permanent dyes usually contain molecules of compounds such as nitrophenylenediamines and niroaminophenols that are small enough to diffuse into the hair. Such coloring agents do not require the use of additional reagents and, thus, are convenient to use, but they are less effective than long-acting dyes, fade relatively quickly after several shampooing operations, and cannot whiten the original hair color.

Temporary dyes usually do not penetrate the hair and, thus, are capable of only a moderate change in hair color. The first time you wash your head with shampoo, they are removed and, therefore, they are only suitable for special cases and make small changes to the hair color, for example, they can hide gray or white hair that has grown back before using a longer-lasting dye. Since temporary dyes do not contain small molecules that can penetrate the hair, you can use a wide variety of compounds, which is quite convenient. For example, you can choose dyes that have no risk of causing an allergic reaction, which is impossible when using longer-acting dyes. There are also a large number of shades available to choose from.

Selecting the ideal characteristics of a temporary hair dye depends on the precise use of the dye. However, as a general rule, ease of removal of the colorant with shampoo is important, but not by rain, perspiration, or friction with clothing or pillowcases.

It is also desirable that the coloring agent has a sufficiently high degree of chemical affinity to the hair and dyes the hair evenly.

Temporary hair dyes are used as ingredients in shampoos and conditioners, shade intensifiers, sprays for colored hair and mascara, designed to be applied to the entire pile of hair or to individual strands of hair. To ensure uniform and stable coloring, several families of dyes are often used within a single formulation.

The charge of the dye molecule can be negative or positive to allow for a low or high degree of chemical affinity to the hair shaft, as positively charged dye molecules (primary dyes) have a higher chemical affinity to the hair.

Common temporary hair dyes contain azo derivatives, basic triphenylmethane dyes such as methyl violet, azine derivatives such as safranin, as well as indoamines and indophenols. above (2005)) Dyed polymers as well as artificial melanin were used.

Polymer dyes with a strong chemical affinity for hair are often semi-permanent or long-acting dyes. Examples of polymers with a strong affinity for hair that are semi-permanent dyes are described in US Pat. Nos. 4,182,612, 5,702,712, and 5,827,330.

In addition, the polymer temporary dye must have, at most, a moderate chemical affinity for hair or, preferably, a low chemical affinity for hair.

Examples of polymers suitable for temporary hair dyeing are described, for example, in patents

US Mo 5737907 and 5891199.

Tannic acid, or gallic acid produced by hydrolysis of tannic acid, has been mixed with iron ions for many centuries to produce iron tannic ink. After writing the text with pale ink, the ferrous ions are oxidized by atmospheric oxygen to produce ferrous ions, which react with tannic acid to form a dark purple-black organometallic polymer that can be long-term bound to proteins, such as those contained in parchment. These iron tannin inks are rarely used today because the paper does not contain protein and the excess iron atoms are extremely corrosive, damaging both the paper and the pens.

A similar process was used to dye hair with a long or semi-long effect using a dye that binds the hair protein. For example, EP Mo 327345 describes a kit containing a ferric ion shampoo for washing hair and a solution containing tannic acid that is applied to the hair after shampooing to create a black dye with a semi-permanent effect. Such a kit is unsatisfactory for use as a temporary dye because the dye has a half-life effect and because the use of two solutions (tannic acid solution and ferric ion solution) is too long and complicated to be attractive to consumers. Moreover, to achieve full color, the kit described here must be used more than once.

Japanese patent Mo 2014324 and US patent Mo 4946472 disclose hair dyes containing ferric ions and tannic acid in the same formulation. However, the coloring agents used in the described recipes are not temporary agents.

Chinese patent application Mo 1990-104017, Japanese patents Mo 3014160 and 48031902 and patent applications

Japanese Mo 2002-47287, 1993-312065, 1988-292113 and 1984-65068 describe long-lasting or semi-long-lasting hair dyes containing ferric iron and tannic acid in a single formulation. Based on the prior art of ferric and tannic acid dyes, it can be stated that upon oxidation (e.g. exposure to air) the ferric ion converts to the ferric ion before reacting with the tannic acid to form colored polymer tannate of iron. Oxidation of the ferric ions in the hair dye applied to the hair results in the formation of a ferric tannate polymer that is strongly bound to the hair, making this hair dye a long-lasting product. These patents and patent applications do not disclose formulations containing tannic acid and ferric ions, let alone formulations devoid of free ferric ions.

Japanese Patents Mo 61055483, 130823, 94800 and 93052 and Japanese Patent Applications Mo 2005-206160, 2000-85556, 1990-336606, 1987-245287, 1984-177514 and 1972-81137 describe long-acting or semi-permanent hair dyes. contain two formulations, one containing iron ions and the other containing tannic acid. Mixing these two solutions in the hair allows for the formation of iron tannates in the hair, which are thus bound to the hair.

In addition to the inability of such formulations to serve as temporary dyes, iron and tannic acid hair dyes have several general drawbacks. Dark black hair dye is not attractive to many consumers. In addition, all the above recipes contain unbound iron ions. Unbound iron is corrosive, and in particular, ferrous ions form highly oxidizing free radicals through the Fenton reaction. Excess iron can damage hair and cause unsightly hyperpigmentation of the skin (I apazoml, Ipi) So5teiiys 5eh., 23:129-137 (2001).

Melanoidins are a family of brownish-colored compounds obtained by the interaction of sugars and amino acids with moderate heating. Melanoidins are responsible for much of the brown color and flavor of cooked foods and are thus recognized as reasonably safe components. However, melanoidins have not previously been described as hair coloring agents.

For temporary hair dyes, it is advantageous to formulate a formulation suitable for applying the color compound (-kK) mentioned herein to the hair with the desired degree of ease and convenience. For example, the formulation may contain solvents and/or surface-active reagents, which provide the possibility of increasing the solubility of the colored material, and yet represent a formulation with rapid drying. In many cases, it is also desirable to include in the formulations components that prevent premature aging or erasure of temporary hair coloring.

Patent application PCT Mo M/O 94/10968 describes an aqueous hair dye composition that contains soluble melanin and a cationic material that binds the soluble melanin to the hair by electrostatic interaction. Preferably, the melanin is made soluble by oxidation with hydrogen peroxide, which is described herein as imparting the ionic character to the melanin. A cationic material, such as a quaternium or polyquaternium compound, is described herein as one that complexes anionic melanin in a manner that increases the chemical affinity of melanin for hair.

US Patent No. 6,506,374 describes a hair dye composition containing alcohols that enable rapid drying and a polymer that prevents color fading.

US Patent No. 5,821,240 describes an aqueous hair dye composition containing a functional quaternary ammonium silane that prevents color fading.

Japanese patent application Mo 1993-312065 describes a hair dye composition containing tannic acid, ferrous salts, and silicone oil, such as a silicone-polyether copolymer. Such silicone oils are non-volatile surface-active reagents useful in forming smooth films on the hair.

Since temporary hair dyes are desirable for their potential ease and convenience of use, it is particularly advantageous to have a quick and convenient method of applying such dyes. Often used are coloring agents in the form of pencils or wick-type devices (eg, US Pat. No. 5,964,222), which are designed to color the hair along the parting of the hair. Another technique involves combing a temporary hair dye gel into the hair. In yet another technique, the hair dye in the form of powder is applied by squeezing a bottle or from an aerosol can designed for spraying the powder, which is then rubbed into the parting of the hair with the fingers.

Disclosure of the invention

This disclosure describes a hair dye application device that includes (i) a shielding device comprising an upper surface and a lower surface and (ii) an aerosol unit designed to deliver a hair dye composition or reagent to the upper surface of the screen.

At any given time, the hair dye application device may be used to dye hair in a specific "local treatment area", such as in or near a parting in the hair that delineates the boundary between the user's forehead and the "mass of hair" higher on the user's head . For example, instead of using the device to color all or most of a client's hair, the device can be particularly usefully used to "touch up" the roots of the hair in specific visible areas of the hair.

In a one-time use scenario, the user dyes or dyes most of their hair, changing the "natural color" to a "target hair color" using any method known in the art. After some time (such as a few days or a few weeks), the user's hair grows back so that the roots of their hair return to their "natural" color.

In many of these cases, instead of correcting this situation by coloring the entire mass of hair (or even a significant part of it), the user is mainly interested in "touching up" visible areas that confuse him (for example, near the hairline that borders the forehead). , where the hair roots have returned to their natural color. According to this dual-use scenario, the user may be interested in a "quick, low-effort" solution where there is a quick treatment of localized areas of hair that does not require significant effort on the part of the user.

In some embodiments of the present invention, a portion of the screen of the hair dye application device described herein may contain narrow longitudinal slits (eg, substantially parallel to each other) through which strands of hair may pass. During use, the composition for dyeing hair is sprayed from an aerosol unit in the area "above" the hair screen; (ii) the screen is oriented to be substantially parallel to the local plane of the user's scalp such that the user's scalp in the "treatment area" is below the screen and protected by the screen from the hair dye composition that may stain the scalp parts of the head; and (ii) transverse (ie, in an "upward" direction) movement of the user's hair in the "treatment area" relative to the thickness of the screen occurs through the elongated slits such that at least a portion (which preferably includes the roots of the hair) of the hair strands is located "higher" the screen (as opposed to the skin of the hairy part of the head, located "below" the screen and protected from the effects of the composition for coloring hair).

When the user sprays the hair coloring composition in the area of the space "above" the screen, the hair coloring composition comes into contact with the hair strands and to color at least a portion of the hair strands (eg, by covering the hair), it is desirable to color the roots of the hair strands. Also, because the elongated slits are typically "narrow" (although wide enough to accommodate passing strands of hair), the screen can essentially prevent the "downward" movement of the sprayable hair dye composition that may deposit on the top surface of the screen under the screen to come into direct contact with the scalp. In multiple use scenarios, such contact can be harmful, for example, it can stain the scalp.

As mentioned above, in the multiple use scenario, the user only wants to cover the unwanted gray color (or other unwanted color) of the hair roots in specific limited areas. In this scenario, the user may typically be interested in a "quick and easy, low-effort" solution.

In some embodiments of the present invention, instead of coloring the hair with a hair coloring cream or gel or mousse known in the art (typically, the user must apply manual effort, "rub" or "comb" the cream, gel or mousse), it may be advantageous to use a hair coloring composition that dries quickly and/or is non-viscous, designed to coat the hair strands, and which does not cause the hair strands to stick together and does not require manual application of the coloring composition to the hair.

Although "quick drying" and/or "non-viscous" hair dyes are easy to work with (ie, there is no need to rub it into the hair and/or it usually dries quickly), one characteristic of non-viscous liquids is that , that they are trying to leak out, which can increase the likelihood of exposure of the hair dye composition to the scalp. For example, the composition for dyeing hair can be distributed on the upper surface of the screen in the form of an aerosol or even a finely dispersed aerosol.

In some embodiments of the present invention, shielding of the scalp below the screen from aerosol droplets from the hair dye composition (e.g., accelerated by delivery from an aerosol unit) and/or from the hair dye reagent delivered as non-viscous liquids may be a problem .

Embodiments of the present invention relate to methods and devices that allow hair to penetrate in a vertical direction above the screen so that the roots can be dyed with a hair coloring composition that is supplied, for example, as a spray jet over the top screen surface, protecting, however, the scalp below the screen even from non-viscous hair dye reagents and/or hair dye reagent delivered as a stream of drops.

Experiments conducted by the present inventor have shown that one or more of the following geometrical properties can be applied to the screen: (A) Narrow elongated slits wide enough to accommodate strands of hair passing upward, but narrow enough to allow substantial amounts of dye material hair did not penetrate down under the screen to the skin of the scalp. (C) The narrow, elongated slits may have some feature related to their length, specifically, they may be long enough to allow "significant amounts" of hair to pass up through the slits above the screen where the hair dye composition is supplied from the aerosol unit.

Thus, elongated but narrow slits have a kind of increased "slit aspect ratio" value that relates the length of the slit (i.e., either the entire length of the slit is meant or the "aspect ratio" is defined within some region of the slit, which has some variety length) with some degree of slot width, and in some embodiments of the present invention, the "aspect ratio of the slot" may be at least equal to 30 or at least equal to 40 or at least equal to 60 or at least equal to 70 or at least equal to 80 or at least equal to 90 or at least equal to 100. (C) The screen portion of the device may contain generally oriented and/or substantially parallel teeth that are "closely spaced" to each other, e.g., gaps or voids between transversely adjacent teeth may have a "narrow gap" or "narrow gap" property , which prevents the penetration of the composition for coloring hair "down" under the screen to the skin of the hair part of the head. (p) Although in some embodiments of the present invention the prongs will not be "extremely narrow", the prongs will not be "too wide" (eg, prongs that are too wide may reduce the number of slots that can be accommodated in a device that is not "too wide"). In some embodiments of the present invention, the upper limit value of the tooth width (or the upper limit value for the average distance between the gaps) (for example, averaged over the majority or over a significant majority or over a very significant majority of the teeth and/or averaged over the entire length of the teeth or averaged over some part of the length of the tooth or screen) can be equal to 4 mm or 3 mm or 2.5 mm or 2 mm. Since "elongated prongs" may provide a more efficient device (ie, longer slots that accommodate more strands of hair), and since in some embodiments of the present invention the prongs may have a narrow property of sorts, the "aspect ratio for the prongs" may be relatively large,

for example, at least equal to 20 or at least equal to 30 or at least equal to 40 or at least equal to 50 or to be in any range of values specified herein or to be equal to the value specified herein. The tooth aspect ratio described below relates tooth length to tooth width or to thickness or cross-sectional area averaged over the entire tooth or over some "tooth fraction/tooth length" along the tooth axis. (E) The shape of the cross-section of the teeth (or the cross-section of the void between adjacent, transverse teeth) may also play a role in shielding the scalp below the screen, facilitating upward movement of the hair strands so that the roots of the hair are "exposed" to the coloring composition hair, which is supplied in the form of an aerosol. Thus, in one embodiment, the inventor discovered that upwardly directed essentially triangular teeth (ie, teeth having an actual triangular cross-section, see, for example, Figs. 15, 21-22) can provide excellent results. These teeth can be made in such a way (and this refers to the cross-section of the tooth in most or a large majority or in a very significant majority of places along the axis of the tooth) that the narrowest "gap" between adjacent teeth in the transverse direction was located at the base of the tooth. Without wishing to be bound by theory, it has been found that having the "narrowest gap" between the teeth near the base of the tooth can facilitate a situation where the root (rather than just the "higher" part of the hair strand) penetrates up above the "narrowest gap" between the teeth into the area , which is more affected by the application of an aerosol composition for hair dyeing. In addition, since the teeth are narrower near the apex, the void between the teeth is wider at "higher" positions near the apex of the voids or the apex of the transversely adjacent teeth. This geometry of the voids is due to the geometry of the teeth and means that the roots of hair strands in positions above the "narrowest gap between the teeth" are less likely to be shielded by the teeth in this "higher" position above the "narrowest gap between the teeth". (E) It has been found that there is no requirement for the mandatory use of teeth with a triangular cross-section, and in some embodiments of the present invention, one or more features associated with a triangular tooth cross-section for any shape tooth cross section. Thus, in some embodiments of the present invention, the cross-section of the tooth and/or the void between transversely adjacent teeth may have an asymmetric width profile, such that the tooth is wider at the base (i.e., on average, in most places) and narrower near the apex ( or vice versa, so that the cavity is wider at the top and narrower at the base, so that the "narrowest gap" is located at the base of the adjacent teeth). (C) In some embodiments of the present invention, the topography of the upper surface of the screen and the lower surface of the screen may be different, so that the upper surface of the screen is relatively rough (for example, due to a wavy surface, and the waves go in a lateral direction), and the lower surface of the screen is relatively smooth. The "scale lengths" for roughness and smoothness are typically about 1 mm (ie, 0.5 mm or 0.75 mm or 1.25 mm or 1.5 mm or 2 mm).

This can be observed by following the trajectory of a cylinder with a radius of 0.5 mm or 0.75 mm or 1 mm or 1.25 mm or 1.5 mm or 2 mm and a length of at least 0.5 cm or at least 1 cm or at least 2 cm or at least 3 cm or at least 4 cm, in the upper and lower surfaces. A top surface that is "rough" causes the cylinder to undulate or oscillate when moving laterally across the top surface of the screen to a greater or much greater degree than in an identical experiment when the same cylinder is moved laterally across the bottom surface of the screen (where vertical oscillations or wave-like oscillations may be negligible or much smaller).

In one embodiment, for most of the gaps between the teeth of the tooth array (any number of teeth described above), when the cylinder is "rolled" or moved laterally across the upper surface of the screen in a lateral direction, the cylinder performs wave or oscillatory oscillations with a first amplitude, where the amplitude of the vertical or wave oscillations is at least 0.5 mm or at least 1 mm or equal to a value equal to the radius of the cylinder or 1.5 times the radius of the cylinder. When the same cylinder is moved, in the same position, on the lower surface of the screen, the amplitude of the vertical oscillations or wave oscillations for the lower surface (ie, the second amplitude) must be less than, that is, a value equal to exactly greater than 95 or exactly greater 30 95 or more precisely 20 95 or more precisely 10 95 , from the value of the first amplitude observed for the upper surface (for example, compare Fig. 25 with Fig. 27).

In some embodiments of the present invention, the ratio of (i) the amplitude of wave/vertical oscillations for the upper surface (ie, measured for a given cylinder) to (its) amplitude of wave/vertical oscillations for the upper surface (ie, measured for the same given cylinder) can equal to at least equal to 1.5 or at least 2 or at least C or at least 5.

In one embodiment, the amplitude of oscillations or wave oscillations of the cylinder for the upper surface may correspond (ie, with a maximum permissible deviation of 70 95 or 50 95 or

ZO Fo) of the radius of the cylinder.

In this application, the term "approximately" means a deviation of 5 10 95.

The term "contains" means that other operations and components may be added that do not affect the final result. This term includes the terms "consisting of" and "consisting essentially of".

The singular form used in the text of this application includes references to the plural, unless the context clearly indicates otherwise. For example, the term "compound" or "at least one compound" may include any number of compounds, including mixtures thereof.

Within the framework of this description, various aspects of the present invention may be presented in the format of ranges. It is to be understood that the description in the format of ranges is provided for convenience and brevity only and should not be construed as an inalienable limitation on the scope of the invention. Accordingly, a range should be considered to contain all possible subranges as well as individual numerical values within that range. For example, describing a range as 1 to 6 means that it contains specifically specified subranges, such as 1 to 3, 1 to 4, etc! to 5, from 2 to 4, from 2 to b, from Z to b, etc., as well as individual numbers within this range, for example, 1, 2, 3, 4, 5 and 6. This is applicable regardless of the size of the range.

Whenever a numeric range is specified here, it means that it contains any specified numeric value (fractional or integer) within the specified range. The terms "located between the first specified value and the second specified value" and "extends from the first specified value to the second specified value" are used interchangeably herein and are intended to include the first and second specified values and all small and integer values in between.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as is commonly understood by one of ordinary skill in the art to which the present invention relates. Although methods and materials similar or equivalent to those described herein may be used in the practice or testing of the present invention, suitable methods and materials are described below. In the event of a conflict, the patent description, including the definition, shall prevail. In addition, the materials, methods and options are illustrative only and are not intended to be limiting.

Brief description of the drawings

The invention is described here only by way of example with reference to the attached drawings. With respect to certain references to the detailed drawings, it should be emphasized that the detailed information shown is by way of example and only for purposes of illustrative description of preferred embodiments of the present invention, and is presented to provide what is believed to be the most useful and easily understood description of the options. , principles and conceptual features of this invention. Accordingly, no attempt has been made to show the structural elements of the present invention in more detail than is necessary for a fundamental understanding of the invention, and the description together with the drawings make it apparent to those skilled in the art how several embodiments of the invention may be implemented on practice

On the drawings:

In Fig. 1-4 show different types of hair dyeing device according to some variants of implementation of this invention.

In Fig. 5-6 shows an array of teeth.

In Fig. 7-8 shows a side view of a hair dyeing device according to some embodiments of the present invention.

In Fig. 9-10 shows an exploded view of a hair dyeing device according to some embodiments of the present invention.

In Fig. 11-12 shows the use of a hair dyeing device intended for hair dyeing according to some examples of implementation of this invention.

In Fig. 13A-13C show the spraying of an aerosol hair dye composition onto the upper surface of the screen.

In Fig. 130-13E shows a view of a hair dyeing device according to some embodiments of the present invention, including an array of teeth, the width profile of which is asymmetrical (for example, triangular).

In Fig. 14, 16 show other types of screen applicable for hair dyeing according to some variants of implementation of this invention.

In Fig. 15A-15B8 shows the application of a jet that is sprayed on the root of the hair according to some variants of implementation of this invention.

In Fig. 17-19 show different types of array of screen teeth, applicable for hair dyeing according to some variants of implementation of this invention.

In Fig. 20-24, 26 show cross-sectional views of an array of screen teeth, applicable for hair dyeing according to some variants of implementation of this invention.

In Fig. 25, 27 shows the trajectory of movement of a hypothetical cylinder.

Fig. 28-29 relate to hair dyeing methods according to some variants of implementation of this invention.

In Fig. ZOA-30B shows a spraying device according to some variants of implementation of this invention.

Description of variants of implementation of this invention

Some variants of the implementation of this invention are related to the methods and devices that were described in the application PCT/LI 2008/001630, which was registered on December 17, 2008; (iii) was published in June 2009 under number U/0/2009/078017; and (ii) incorporated in its entirety into this application by reference. In some embodiments of the present invention, any feature or combination of features described in this application can be combined with any feature or combination of features described in PCT/LI 2008/001630 application.

The present invention, within the framework of some variants of its implementation, describes a device for applying a composition for hair coloring, reagents for coloring hair, and compositions that can be used for coloring hair.

In particular, the present invention can be used to dye ("touch up") hair along the hairline in a quick and convenient way, especially with the help of a temporary hair dye composition based on hair dye reagents that are essentially natural (for example, obtained from naturally occurring substances) that are environmentally friendly and that show natural hair tones and/or contain a suitable, easily evaporating, alcohol-free carrier.

The principles of operation and operation of the hair dye application device according to the present invention can be better understood with reference to the drawings and accompanying descriptions.

Before the detailed explanation of at least one embodiment of the present invention, it should be noted that the invention is not limited to the detailed descriptions of the construction and arrangement of components formulated in the following description or shown in the drawings. The invention can be implemented in other variants or can be implemented in practice or implemented in different ways. In addition, it should be noted that the phraseology and terminology used herein is for descriptive purposes and should not be construed as limiting.

In Fig. 1-4 show different types of hair dyeing device according to some variants of implementation of this invention.

In Fig. 5-6 shows an array of teeth.

In Fig. 7-8 shows a side view of a hair dyeing device according to some embodiments of the present invention.

In Fig. 9-10 shows an exploded view of a hair dyeing device according to some embodiments of the present invention.

In Fig. 11A-11C depict a single-use scenario where a user uses the hair coloring device 200 to color the roots of their hair, for example, in the "peripheral" region 490 bordering the forehead.

In Fig. 12 shows another use case.

In Fig. 13A-13C show side views of the device 200 used in the cases of FIG. 11-12. As will be described below, in one non-limiting use scenario, the device 200, which includes the screen 220, can be used to color a user's hair (in particular, the roots of the user's hair) with a sprayable aerosol (eg, an aerosol or stream of droplets containing a hair dye reagent and alcohol solvent), while protecting the skin of the hair part of the user's head from the effects of the hair dye reagent.

In some embodiments of the present invention, the hair dye, which is provided in spray form, provides "quick drying" and/or is non-viscous. In these embodiments of the present invention, despite the ability of the hair dye solution to "run" after being deposited on the surface of the screen 220 (which occurs due to the invisibility of the sprayed hair dye jet, in the given embodiments of the present invention), the screen 220 can, however, provide geometric properties that facilitate the protection of the skin of the scalp of the user from the reagent for dyeing hair.

As will be described below, to provide such protection and/or implement other functions, in some embodiments of the present invention, the screen 220 may include one or more of the following features: () "thin elongated" slits having a high "slit aspect ratio" value ; (iii) a series of closely spaced teeth where the teeth or voids between the teeth have a high "aspect ratio" value; (ii) teeth with a certain cross-sectional shape (for example, triangular); and/or one or more of the additional features described herein. The device 200 contains (a) a relatively flat screen 220, made with the possibility of penetration into the hair and (ii) an aerosol unit 400. The aerosol for coloring hair is distributed from the aerosol hole/outlet 210 on the "front" surface 280 of the screen 220, and the path of the aerosol to the upper/ front surface 280 is shown by a large arrow labeled "spray jet" in FIG. 1ZA-13C, and also shown as element 430 in FIG. 118.

Although not limiting, in some embodiments of the present invention the spray jet is a "fan-shaped spray jet" designed to angularly distribute the aerosol jet substantially uniformly at an angle of at least 20 degrees or at least 30 degrees or at least 40 degrees and/ or more than 180 degrees and/or more than 120 degrees and/or more than 90 degrees and/or more than 70 degrees and/or more than 50 degrees and/or more than 40 degrees. In some embodiments of the present invention, the fan-shaped spray jet formed by the aerosol unit is substantially planar in shape (ie, located in a plane substantially parallel to the relatively flat surface of the screen 220 and/or intersects that surface at an angle of less than 30 degrees or less than 20 degrees or less than 10 degrees).

A description of the atomizing unit comprising an orifice and a "spray jet insert" is given below with reference to FIG. 30.

In some embodiments of the present invention: () this aerosol spray jet is directed to the front surface 280 of the screen 220; and (ii) the mechanical design of the screen 220 blocks this aerosol from entering the space 450 below the screen 220, i.e., the space on the side of the screen 220 defined by the bottom/back surface 290 of the screen 220. In the embodiment of FIG. 11-12, the screen 220 can be oriented so that the rear surface 290 is located opposite the skin of the scalp of the user, which is located "below" the rear surface 290, see FIG. 11-12, where the front surface 280 is "turned away" from the skin of the user's scalp, although the rear surface 290 (not visible in Figs. 11-12) is pressed against the skin of the user's scalp. In this embodiment, the screen 220 is oriented such that the relatively flat structure of the screen 220 is pressed against and substantially parallel to the "local relatively flat surface" of the skin of the user's scalp.

In the description of this disclosure, the terms "above" and "below" the screen 220 refer to the positions "above" and "below" the screen 220 along the "screen thickness axis 270" defined in FIG. 13A-13C regardless of the orientation of the screen 220 or the device 200. In FIG. 138-13C, the area "above" the screen 220 is designated 702, and the area "below" the screen 220 is designated 704. Since the terms "above" and "below" are defined regardless of the orientation of the screen 220 or the device 200, in the embodiment of FIG. 11, even though the screen 220 is substantially vertical, the area where the hair dye aerosol is sprayed is located "above" the screen 220, while the scalp against which the rear surface 290 of the screen is pressed is located "below" screen 220.

As noted above, one function of the device 200 is to protect or shield the scalp skin "below" the screen from direct exposure to the aerosolized hair dye reagent. Another function of the device 200 is to facilitate the delivery of the hair dye reagent to the strands of hair, for example, to the roots of the hair. Thus, screen 220 may contain a number of relatively narrow slits 480 (see FIG. 11C) that are wide enough to accommodate strands of hair, but not much wider. As shown in fig. 11C, these slits may be generally aligned relative to each other and/or generally aligned relative to the longitudinal axis 250 of the screen.

In this disclosure of the invention, a slit in a given position (for example, in a "longitudinal position" determined by some value along the axis of the slit or the axis of the tooth or the longitudinal axis 250) can have the property of "overlapping the thickness of the screen" in some position, if the possibility of passage is ensured in the given position through the gap in the "thickness/height" direction, that is, along the 270 axis of the screen thickness. Thus, referring to Fig. 138-13C, it can be seen that it is possible to "pass" through the gap in this position, which has the property of "overlapping the thickness of the screen", from region 704 up to region 702 (or vice versa).

Hair strands 310 growing in the skin of the user's scalp pass through narrow slits (ie, along the "screen thickness axis" 270 defined in Figs. 13A-13C from the rear surface 290 to the front surface 280) to appear "above screen" in the area 702 of the space "above" the screen.

As shown in Fig. 11C, these strands of hair 310 (or portions thereof) may then be "combined" with the sprayed hair dye aerosol in the area 702 above the screen and exposed to the sprayed hair dye reagent to facilitate dyeing of the hair roots.

In some embodiments of the present invention: (i) the narrow slits 480 are really narrow (e.g., having a minimum width in the range of 0.2 mm to 1 mm (e.g., at least 0.2 mm or at least 0.3 mm, e.g., at most 1 mm or precisely greater than 0.8 mm or precisely greater than 0.7 mm or precisely greater than 0.7 mm or precisely greater than 0.6 mm) and (ii) the screen 220 is geometrically structured such that other features are essentially absent (i.e., holes, nozzles, slits, etc.) that would allow the aerosol to pass through the screen 220 in a "downward" direction along the axis 270 from region 702 to region 704. Thus, it is possible to implement an apparatus and design a method that substantially confines the reactant to hair coloring that is delivered as an aerosol through the front surface 280 (therefore restricts the reagent for dyeing the hair that is delivered as an aerosol to the strands of hair 310 or in some preferred embodiments of the implementation of the present invention to the roots of the strands of hair 310) of the screen 220, protecting the skin of the hairy part of the head, located "below screen 220" in area 704.

Additionally, in some embodiments of the present invention, due to the narrowness of the slits 480 and/or due to the "density" of the material in the space defined by the screen 220, the screen 220 is not actually a ridge. Instead, the screen 220 may be used to penetrate (to some extent) the hair region essentially the "border" region 490 between the mass of hair and the user's forehead (see FIG. 11), or the hair parting region (see FIG. 12). , and in some embodiments of the present invention, it may be difficult for the hair-penetrating screen to penetrate much deeper into the mass of the user's hair.

However, in multiple use scenarios, the user dyes or recolors most of their hair, changing the "natural color" to the "target hair color" using any method known in the art. After some time (such as a few days or a few weeks), the user's hair grows back so that the roots of their hair return to their "natural" color. In many of these cases, instead of correcting this situation by coloring the entire mass of hair (or even a significant portion of it), the user is mainly interested in "touching up" the visible areas that are confusing (for example, near the border region 490 and/or along parting 510 hair), where the roots of the hair have returned to their natural color. Accordingly, in some embodiments of the present invention, a screen may be useful for this purpose, even though the screen 220 may not exhibit a "comb function" (as it does in some embodiments of the present invention) and the use may be substantially limited to these "borderline" visible areas of hair.

To protect the scalp and/or provide an "opportunity" for strands of hair to pass through the screen 220 in an upward direction to be exposed to the aerosolized hair dye reagent, the screen 220 may include one or more of the following features: (|) "thin elongated" slits having a high "slit aspect ratio" value; (its) array of closely spaced teeth where the teeth or voids between the teeth have a high "aspect ratio" value; (iii) teeth with a certain cross-section (for example, triangular); and/or one or more of the additional features described herein. As will be described below, the "fineness" of the slits or voids or gaps can be used to prevent the downward movement of even non-viscous material, since certain slits or voids or gaps may still be wide enough to accommodate strands of hair (ie, whose width can on the order of hundreds or hundreds of microns), and the "long gap" or "long void" feature can be useful in creating a large area where strands of hair can travel "up" the screen into the space above the screen where the hair dye reagent (e.g. droplets of the spray jet) can cover strands of hair.

In another embodiment (see FIG. 15 ), the individual teeth may have a kind of asymmetric width profile, where the teeth are wider (or conversely, the "gap" or "gap" between the teeth is narrower) "closer" to the lower surface 290, while the teeth are narrower (or conversely, the "gap" or "gap" between the teeth is wider) near the upper surface 280. As will be discussed below, the location of the "minimum gap" near the lower surface may be useful to alleviate the situation, wherein the roots of the hair, in particular, are exposed to a hair dye reagent, for example, which contains a black hair dye, and/or a hair dye reagent capable of "coating" the hair.

Another feature that can be created with the device 200 and the use of which is shown in FIG. 11-12, is the ability to "penetrate" the user's hair in the "boundary position" when the screen is oriented essentially parallel to the local plane of the user's head.

To facilitate penetration (eg, "fine penetration" into thick hair (eg, thick Indo-European or African or Asian hair)) of the screen 220 into the bulk of the hair, it may be useful to use hair-penetrating elements 240 (eg, see Figs. 11C, 16- 17). However, in some variants of the implementation of this invention, due to the narrowness of the slots 480 (we also note the narrowness of the "interdental spaces" 370, which can determine the narrow location of the slots 480, see

Fig. 17, 19, 21) the screen can provide a reduced "combing" function or its complete absence. In one embodiment, "fine penetration" into "thick hair" is limited to a value of 3 cm or a value of cm or a value of 7 cm.

Other features shown in Fig. 11-12, include an aerosol control handle 410, an aerosol can 420 where the hair dye aerosol can be stored prior to being dispensed through an outlet 210, and a device stand or housing 230 that provides mechanical coupling or mechanical communication between the screen 220 and the aerosol unit 400. In one non-limiting embodiment, the aerosol unit 400 may be directly or indirectly attached to the screen 220 using any fastener known in the art, including, but not limited to, a clip, a screw device, a magnetic fastener element or any other fastener known in the art. For example, the aerosol block 400 can be removably attached to the screen 220. In another embodiment of the present invention, the aerosol block 400 (or its part) and the screen 220 can be glued to each other or welded to each other or made in the form of a single device.

Let's turn now to Fig. 13A-13C, which are side views of the device 200 (or parts thereof).

In Fig. 13A-13C show the near 228 and far 224 ends of the screen 220 defining the general "near to far end" direction 226. The distance between the near end 228 and the far end 224 is referred to as the "near to far end" distance. In the variant in Fig. 11-13, the spray jet (or a "spray vector" of sorts, which defines the main tendency of the directions along which the aerosol emitted from the outlet 210 travels) may travel in the direction 226 from the near end to the far end and/or generally be oriented relative to the longitudinal axis 250.

In a non-limiting variant in Fig. 13B, the outlet 210 through which the hair dye aerosol enters is (i) "elevated" above the substantially flat surface/the substantially flat surface of the screen 220 by a distance indicated 440 (in FIG. 138 the "extension" of the substantially flat surface of the screen 220 indicated as 470), it is displaced inwardly behind the proximal end 228 by a distance indicated by 442. In some embodiments of the present invention, the "height" indicated by 440 may be at least 1 mm, or at least 3 mm, or at least 5 mm , or at least 1 cm, or at least 1.5 cm, or at least 2 cm, or at least 5 95 and/or at least 10 95, or at least 20 95, or at least 30 95 "near to far end distances" and/or at least be 1.5 times or at least 2 times, or at least 3 times, or at least 5 times, or at least 7 times the average thickness of the screen 220. In some embodiments of the present invention, where the screen 220 includes an array of teeth that contains essentially aligned teeth (see, for example, Fig. 15- 21), the "height" indicated by 440 may be at least 1.5 times, or at least 2 times, or at least 3 times, or at least 5 times, or at least 7 times the average tooth thickness averaged over the teeth in the array teeth

In some embodiments of the present invention, the "reverse shear distance" designated as 470 may be at least 5 mm, or at least 1 cm, or at least 1.5 cm, or at least 2 cm, and/or at least 10 95 , or at least 20 95 , or at least 30 95, or at least 50 95 from "from the "near end to far end distance"" between the inner 228 and outer 224 ends of the screen 220.

In some embodiments of the present invention, raising and/or shifting the aerosol outlet 210 in an outward direction may be useful to "create some distance" between the aerosol outlet 210 and the screen 220. In some embodiments of the present invention, if the aerosol outlet 210 is located too close to the screen 220, there may be an increased risk of aerosolized hair dye reagent (e.g., delivered as a stream of droplets) from region 702 and upper surface 280 through the screen to a position below lower surface 290 in region 704 ( where the scalp is located).

As indicated in Fig. 13C, although the spray (eg, as a stream of droplets) may initially leave the opening 210 in a direction that may be located along the direction 226 from the near end to the far end, the aerosol path may be bent toward the screen 220 on the top surface 280 for hair coloring 310 , passing through the screen upwards, and the spray stream (or a kind of "spray vector", which defines the main tendency of the direction along which the movement of the aerosol emitted from the opening 210 occurs) can be directed along the direction from the near end to the far end in the region 702 above screen 220. In some embodiments of the present invention, this hair dye spray may contain a hair dye reagent that dries quickly and/or may contain a "temporary" hair dye reagent that can be removed by one or more washes hair and/or within a short period of time, which is at most a few days or a few weeks.

As noted above, screen 220 may be useful in preventing the "downward" movement (ie, from region 702 above the screen to region 704 below the screen) of even a non-viscous hair dye reagent.

In one non-limiting embodiment, the non-viscous hair dye reagent may contain a dye (eg, a basic hair dye) mixed with a non-viscous carrier, for example, an alcohol-based carrier. In non-limiting embodiments, the drops contain at least 5 95 or at least 10 95 or at least 15 95 alcohol by weight. In a non-limiting exemplary embodiment, the droplet flow has a particle size of less than 200 microns, or less than 100 microns, or less than 80 microns, or less than 60 microns, and/or at least 5 microns, or at least 10 microns, or at least 20 microns, or at least 30 microns. A "non-viscous" material (eg, a liquid) is one that "runs" or "flows" and may have a viscosity of less than 100 centipoise per second (and/or less than 100 times the viscosity of water at degrees Celsius) or less than 75 centipoise per second (and/or less than the viscosity of water multiplied by 75 at 20 degrees Celsius) or less than 50 centipoise per second (and/or less than the viscosity of water multiplied by 50 at 20 degrees Celsius), or less than 30 centipoise per second (and/or less than multiplied by 30 the viscosity of water at 20 degrees Celsius), or less than 20 centipoise per second (and/or less than multiplied by 20 viscosity of water at 20 degrees Celsius), or less than 10 centipoise per second (and/or less than multiplied by 10 the viscosity of water at 20 degrees Celsius), or less than 5 centipoise per second (and or less than multiplied by 5 viscosity of water at degrees Celsius), or less than 3 centipoise per second (and/or less than multiplied by 3 viscosity of water at 20 degrees Celsius), or less than 2 centipoise per second (and/or less than 2 times the viscosity of water at 20 degrees Celsius), or less than 1 centipoise per second (and/or less than 100 times the viscosity of water at 20 degrees Celsius), less than 1 centipoise per second (and/or less than the viscosity of water at 20 degrees Celsius).

In some embodiments of the present invention, the presence of a "low viscosity" hair dye composition (e.g., supplied as an aerosol) may eliminate the need for the user to "comb" or "rub" the hair dye reagent into the hair (as is the case with fine-drop spraying). The user simply sprays the hair dye onto the hair, and the droplets (eg, coming directly from the aerosol nozzle and/or droplets reflected from other strands of hair) serve to coat the user's hair. In one embodiment, this can occur without multiple strands of hair sticking together.

In some embodiments of the present invention, the presence of a "high concentration" of propellant (eg, ether propellant), for example, at a concentration equal to at least 15 95 or at least 20 95, or at least 25 95, or at least 30 95, or at least 35 95, and /or the use of an alcohol solvent facilitates the rapid drying of dyed strands of hair, for example, within a few minutes.

In Fig. 130-130 shows another view of the device 220, for example, a cross-section of the region filled with vectors of the screen thickness axis 270 and the transverse axis 260 (the lateral direction of the transverse axis 260 is also shown in Fig. 14). There is no requirement that the screen 220 be flat or generally flat. In a non-limiting variant in Fig. 130-130, the generally flat screen is "gently concave down" to create a kind of gentle, shallow and wide depression into which a portion of the skin of the user's scalp can be placed.

In some embodiments of the present invention, the screen 220 may include teeth, as shown in FIG. 14. In the embodiment of Fig. 14-29, each prong includes a corresponding main portion 330 and a corresponding distal portion 240. In some embodiments of the present invention, the gap between the prongs (eg, the narrowest gap, i.e., the minimum intermediate distance 370 at some position between the apex 246 and the base 248 of a pair of prongs) may refer to the slots 480 described above.

In a non-limiting variant of the implementation in Fig. 15-29, the screen 220 contains an array of teeth, in which there are exactly twenty-two teeth. This is not a limitation. In some embodiments of the present invention, the screen 220 may contain at least five or at least eight or at least ten or at least twelve or at least twenty or exactly twenty-two teeth aligned in total. In a non-limiting variant of the implementation in Fig. 15-21, all teeth are strictly parallel to each other and this is not a limitation. In some embodiments of the present invention, the "generally aligned" teeth may be substantially parallel or may diverge from each other closer to the distal end 224 or converge.

One significant feature provided by the teeth in the non-limiting embodiment of FIG. 15 is that these teeth are relatively long/tall and narrow and/or relatively long/tall and thin.

In this disclosure, the tooth "width" (ie, the value determined at any position along the tooth axis) refers to the size of the tooth along the transverse axis 260. As will be described below (see FIG. 21), this width for any of a particular tooth may be different in different positions along the axis 270 of the thickness of the screen (or along the axis of the tooth or along the longitudinal axis 250). In a non-limiting variant of the implementation in Fig. 17, 19 and 21, the "width" at the "base" of each tooth 248 is indicated as 360, and the width near the "top" of each tooth is indicated as 350.

In this disclosure, the "thickness" or "height" of the tooth is the measurement of the tooth along the thickness axis of the screen 270. As is apparent from the figures, the height or thickness may vary along the transverse axis 260 or along the tooth axis or along the longitudinal axis 250.

As noted above, one essential feature provided by the teeth in the non-limiting embodiment of FIG. 14, is that these teeth are relatively long/tall and narrow and/or relatively long/tall and thin, i.e., they may have a "large aspect ratio". In some embodiments of the present invention, for each tooth of the screen tooth array 220 or for most of the teeth of the tooth array (or at least 30 95 or at least 70 95 teeth of the tooth array, with the possible numbers of teeth of the tooth array mentioned above), at least one from the parameters

TOOTN RATIO 1, TOOTN WATTIO 2, and TOOTN WATTIO 3 may be at least equal to 10, or at least equal to 15, or at least equal to 20, or at least equal to 25, or at least equal to 30, or at least equal to 40.

The parameter TOOTN WATIO 1 is defined as the ratio of the length of the tooth to the average width of the tooth (that is, the averaging is carried out for all positions in the tooth along the axis 270 of the thickness of the screen and along the length of the tooth, while either including or excluding the distal conical section 240 (the probing section 240, made with the possibility of passing hair through it.) The TOOTN WATIO 2 parameter is defined as the ratio of the length of the tooth to the average thickness of the tooth (that is, the averaging is carried out for all positions in the tooth along the transverse axis 260 and along the length of the tooth, while either including or excluding the distal conical section 240 (the probing section 240 is made with the possibility of passing hair through it). The TOOTN WATIO Z parameter is defined as the ratio of the length of the tooth to the average cross-sectional area of the tooth (Fig. 21 shows the "layers" or cross-sections of the teethb. TOOTN WATIO Z averaged along tooth length, while either including or excluding the distal conical section 240 (the probing section 240 is made of possible hair passing through it).

Another significant feature that can facilitate temporary hair root coloring while protecting the scalp is a feature where "the tooth is relatively wide at the base of the tooth" but "relatively narrow" near the top of the tooth.

In some versions of the implementation of this invention, to ensure this function, the cross-section of the tooth can be triangular in shape, for example, with a wider base and a narrower top.

This is shown in Fig. 15.

In Fig. 15 also shows a sequence of operations by which hair with gray roots can be processed to cover strands of hair (eg at the roots) with black hair dye. Thus, Fig. 15A shows the state before processing, in FIG. 158 shows one version of the sawing operation, and Fig. 15C shows strands of hair "after" processing according to one non-limiting embodiment.

In a non-limiting variant of the implementation in Fig. 14-21, all teeth have identical shapes and cross-sections (the length is not necessarily identical). This is not a limitation, and in some embodiments of the present invention, there may be variations in the dimensions of the teeth and/or dimensions describing the geometric relationships of several (e.g., adjacent in the transverse direction or adjacent in the transverse direction) teeth (e.g., the distance between the gaps of the teeth).

In addition, the cross-section of the tooth can change longitudinally along the "axis of the tooth" (not shown in the figures).

In addition, in non-limiting variants of the implementation in Fig. 15-29, the teeth are strictly straight, i.e., a kind of internal "tooth axis" (ie, the elongation or central axis of the tooth) always corresponds to the longitudinal axis 250. This is not a limitation, and even if the "local axis of the tooth" is a "very short" distance is a straight line, it is quite clear that when the tooth is not perfectly straight, the central/elongated axis of the tooth (not shown) can provide curvature or sharp angles, instead of being a "straight line"; it is possible to represent the axis of the tooth as a one-dimensional manifold in space, which in many embodiments of the present invention will be generally oriented with the longitudinal axis 250 and will approximate a straight line.

One significant feature that can be provided by the device in FIG. 14-29, is that (the) tooth width may be different for different tooth "heights" (eg, along the 270 axis of the screen thickness) and (its) this width function may provide an "asymmetric width profile" (ie, which refers to the width of the tooth at one or more positions along the length of the tooth, for example at most positions along the length of the tooth or at most positions along a "given cross-section" of a tooth that is at least 2 cm long).

Some of the features described herein may relate to a "portion" or "control portion" of the main portion 330 of the tooth or teeth (ie, "longitudinal cross-section") that is at least 2 cm or at least 2.5 cm or at least 3 cm or at least 3.5 cm or at least 4 cm. This "longitudinal" part can be located in any position on the tooth. In some embodiments of the present invention, this "given portion" may be located near the far end of the screen 220, for example, it may be longitudinally adjacent (ie, bordering or located less than 5 mm or 1 cm from) the conical far section 240 (eg, having a "probe shape", eg, including a rounded end).

In a non-limiting variant in Fig. 21 cross-section of the tooth is a triangular cross-section (for example, an isosceles triangle with rounded corners). Other cross-sectional shapes are possible, including, but not limited to, other "substantially triangular cross-sectional shapes".

In the variant in fig. The tooth 21 has a relatively large width at the base of the tooth 248 (eg, C60) and a relatively small width at or near the tip 246 of the tooth. Another significant feature in Fig. 21 is that the width of the minimum cross-sectional gap (ie, between laterally adjacent pairs of teeth, e.g., gap 3701 between teeth 3301 and 330.)) is located at or near the base of tooth 248.

By locating this "minimum gap" at the base of the prong, it is possible to locate the roots of the hair strand 310 in the void region 390 between transversely adjacent prongs above the location of the minimum gap 370. In some embodiments of the present invention, it may be useful or important to allow the roots of the hair strand to pass through 310 through the location of the minimum gap 370 (and not only through a more distant location within the hair strand past the root) and the appearance above this location in the region 390 of the void between the teeth above the "wave-like" upper surface 280 of the screen defined by the upper surfaces of the teeth. Since the root of the hair strand (and not just the top position of the hair strand) is located in the "aerosol exposed" region 702 above the upper surface 280 and not in the "aerosol shielded" region 704 below the location of the minimum gap 370 (and below the lower/ the bottom surface 290 of the screen 220), these hair roots passing through the minimal gap can be exposed to the hair dye reagent delivered by the hair dye aerosol spray.

In some embodiments of the present invention, the average void area or the area for an individual void (ie, for a longitudinal section that is at least 2 cm, or at least 2.5 cm, or at least 3 cm, or at least 4 cm, or at least 5 cm, or more) can be (i.e. either for a single tooth or for a single gap or for an array of any number of teeth or gaps or voids, i.e. either averaged over the array or individually for any number within the array of slots or teeth or voids) is more than 6 mm: or more than 5 mm, or more than 4 mm, or more than 3 mm, or more than 2 mm", and in some embodiments of the present invention, the average or individual value of the void area can be at least 0.5 mm or at least equal to 1 mm. This value of "void area" may prevail on average across the section or may prevail for at least a significant minority of positions, for at least the majority of positions (synonymous with "for most polo zhen") or at least for a significant or very significant majority of cross-section positions. This may be true on average for any number of teeth from an array of teeth (or voids formed between them) or for any number of slots or voids from a slot array of voids and/or may be true individually for a significant minority or majority or a significant most or a very large majority of the teeth (that is, which are formed as a result of the voids formed between them) from the array of teeth.

In some embodiments of the present invention, the average or individual tooth cross-sectional area (ie, for a longitudinal section that is at least 2 cm, or at least 2.5 cm, or at least 3 cm, or at least 4 cm, or at least 5 cm, or greater) can be (i.e. either for a single tooth or for any number of teeth, i.e. either on average or individually for" an array of any number of teeth within the array of teeth) is exactly greater than 6 mm? or exactly greater than 5 mm: or namely more than 4 mm: or more than 3 mm: or more than 2 mm", and in some embodiments of the present invention, the average or individual cross-sectional area of the voids may be at least 0.5 mm: or at least 1 mm". This value " tooth area" may prevail on a cross-sectional average or may prevail for at least a significant minority of positions, for at least most positions (synonymous with "for most positions"), or at least for a significant or very significant majority section provisions. This may be true on average for any number of teeth in an array of teeth (or voids formed between them) and/or may be true individually for a large minority or majority or a large majority or a very large majority of the teeth (i.e. resulting from voids formed between them) from an array of teeth.

As can be seen from the figures, the "top surface of the void regions 390" and/or the "top surface defined by the connection of the top positions of the teeth 246" (indicated as 340) may be deviated from the "top" surface 280 of the screen or teeth ( eg be above "minimum gap location" for "minimum gap distance" 370).

One significant feature observed in Fig. 21, is that the upper surface 280 is relatively rough and contains oscillating heights (along the transverse axis), while the lower surface is flat). In some embodiments of the present invention, a geometry wherein () the lower surface 290 is relatively smooth and wherein (ii) the location of the minimum gap for the minimum spacing 370 is closer to or located at the base of the teeth 248 is useful in facilitating the passage of the hair strand 310 through the position a minimum gap of 370 in the roots of the hair. On the other hand, if the minimum intermediate distance 370 between the gaps were to be greater and/or if the bottom surface were to contain large vertical variations, this could, at least to some extent (without going beyond the scope of the invention), reduce the efficiency device as the hair dye could tend to concentrate at a higher position on the hair strand 310 rather than at the roots of the hair.

The preceding paragraph (and any other feature or figure described herein) refers to some of the features that may be provided in some embodiments of the present invention, and this should not be considered as a limitation.

In some embodiments of the present invention, since the upper surface 280 may have a tendency to undulate or oscillate along the transverse axis, while the lower surface may not (or only to a small extent) exhibit such undulations/oscillatory movements. "top surface 280" may be a rough surface (ie, have a rough topography), while bottom surface 290 may be a "smooth" surface. This can also be observed by comparing Figs. 15 and Fig. 16 from Fig. 18. While the width of the teeth on the front surface can be significantly different between the base and the apex of the teeth (compare positions 350 and 360) on the front side (facing "down"), it can be seen in Fig. 18 that the back surface 290 is much smoother 18, the rear surface 290 includes wider teeth (ie, at or near the base 248, and in contrast to the downward facing front surface the width may vary significantly) interspersed with relatively narrow gaps 370.

In a non-limiting embodiment, the "minimum gap width" 370 for narrow gaps is at least 0.2 mm, or at least 0.3 mm, or at least 0.4 mm. In a non-limiting embodiment, the "minimum gap width" 370 for narrow gaps is exactly greater than 1.2 mm, or precisely greater than 1 mm, or precisely greater than 0.8 mm, or precisely greater than 0.7 mm, or precisely greater than 0.6 mm. This is appropriate for any number of teeth from a tooth array (ie, refers to a large minority, majority, large majority, very large majority) and/or averaged over any length of tooth or gap (ie, for a "cross section" of at least a significant a minority of the provisions, at least the majority of the provisions or, synonymously, for the majority of the provisions or for at least a significant or a very significant majority of the provisions).

In Fig. 2IO the "highest position" or "top" of the various teeth is marked as 246. The "base" or the lowest point on the axis 270 of the thickness of the screen is marked as 248. The "halfway" point (it can be the locus of points if the tops of the bases of the teeth are a geometric location of points) 249 is also shown in Fig. 210. However, all points of the "geometric locus of points 249" (or half points for the top point) must have the same "height" 923 above the base 248 (see also Fig. 230).

In some embodiments of the present invention, for most (or a large majority, i.e., at least 70 95 or 80 95 ) positions within 2 cm of the longitudinal "control cross-section" or "set cross-section" of the "maximum 360 tooth width" ratio tooth (in some in embodiments of this invention, the maximum width 360 can be placed in the lower half or in the lower 30 956 or lower 20 95 or lower 10 95 teeth, where the upper sections and lower sections of the tooth are defined along the axis 270 of the thickness and relative to the top 246 and the base 248 of the teeth) to the "minimum intermediate distance" 370 may be at least 1.3, or at least 1.5, or at least 1.7, or at least 2. The skilled artisan may refer, for example, to FIG. 19A and 18. This "relational feature" may be provided for a "set of teeth" of at least 2 or at least 3 or at least 4 or at least 5 or at least 7 or at least 10 or at least 12 or at least 15 consecutive teeth In some embodiments of the present invention, this feature can be provided in such a way that for most "pairs of adjacent spaces" 370 (in Fig. 17A, positions 3701 and 370) represent a "pair of adjacent spaces", and positions 3701 and 370K do not represent "a pair of adjacent spaces) the distance between adjacent "spaces" 370 (or, in some embodiments of the present invention, the average of the distances between pairs of adjacent spaces) is exactly more than 2 cm or exactly more than 1.7 cm or exactly more than 1.5 cm .

It is possible to define a "fill factor" of a two-dimensional surface or a three-dimensional volume of space (ie, a "control area" or "control volume"), both of which contain(s) "screen material 220" or "teeth material 330" ( eg plastic or any other suitable material) and (ii) voids or voids (eg 390 or 702 or 704). The "fill factor" is the ratio of: (ii) the total area (or volume) within the "control area" (or "control volume") occupied by the material to (ii) the overall size (ie, the area or to the volume) of the object of control.

One example of a "control volume" is shown in Fig. 22A-22B (marked as 810). The "measurement" or "length" of the control volume in the longitudinal direction 250 may be at least 1 cm or at least 2 cm, or at least 3 cm. The "measurement" or "length" of the control volume in the "transverse direction" 260 may be at least 0.5 cm, or at least 1 cm, or at least 1.5 cm, or at least 2 cm. In some embodiments of the present invention, the "fill factor" may be at least 60 95, or at least 70 95, or at least 75 95, or at least 80 95 , or at least 85 95, or at least 90 95, or at least 95 95.

The control area or control volume may be substantially flat, e.g. laterally following the contour of the midline or median curve of the screen (ie connecting the "midpoints" of adjacent teeth, where the midpoint is defined by the "midpoint" of the top 246 and the base 248 of the tooth) and following the contour of the lower surface 290.

In some embodiments of the present invention, in the direction along the lateral direction, the control area or control volume includes elongated slits (ie, these slits are voids and may correspond to the "minimum gap 370" or a position slightly above or below), and the length of each slit is at least 0.5 cm or 1 cm or 1.5 cm or 2 cm, where (i) the average "lateral distance between laterally adjacent slits" is exactly greater than 4 mm or exactly greater than 3 mm or precisely greater 2.5 mm, or exactly more than 2 mm; and/or (ii) a majority of the slits (or a substantial majority of the slits, e.g. at least 70 95 or 80 95 slits) have an average longitudinal width of at least 0.2 mm or at least 0.3 mm, and specifically greater than 1, 2 mm, or more than 1 mm, or more than 0.8 mm, or more than 0.7 mm, or more than 0.6 mm; (its) ratio between the average distance between the slits in the lateral direction and the average width of the slit is precisely greater than 4 or precisely greater than 3 (if this ratio is "too large" and/or if the slits are located in the lateral direction "far from each other it may reduce the possibilities passage of hair strands of the screen 220 in the vertical direction).

Fig. 23 refers to the case of one-time use, where the cross-section of not all teeth is the same. In Fig. 23A the tip of the tooth is indicated by position 246, the base by position 248, and the "middle point" or line by position 249. This line can define two regions, namely, the "top region" above line 249 closer to the tip 246 of the tooth (this region will on average be tapered ), and the "lower region" below the line 249 closer to the base of the tooth 246 (this region will be narrowed on average).

In some embodiments of the present invention, the ratio between (i) the average transverse tooth width in this "lower region" below line 249 and (i) the average transverse tooth width in this "upper region" above line 249 may be at least 1.1 or at least 1 ,2, or at least 1.3, or at least 1.4, or at least 1.5, or at least 1.6, or at least 1.7, or at least 1.8, or at least 1.9, or at least 2, or at least 2.5. "Average transverse tooth width" may be obtained by averaging according to any of the techniques described herein, e.g., by averaging longitudinally along the axis of the teeth in a certain region of the entire set of teeth and/or between any set of teeth (or subset) of the array teeth

In Fig. 248, the "upper region" is defined as the region above point 911 (3/4 of the way to the top), while the "lower region" is defined as the region below point 909 (3/4 of the way to the base).

In some embodiments of the present invention, the ratio between (the) average transverse tooth width in this "lower region" below point 909 and (its) average transverse tooth width in this "upper region" above point 911 may be at least 1.3 or at least 1, 5, or at least 1.7, or at least 2, or at least 2.5, or at least 3, or at least 4, or at least 5, or at least 7, or at least 10. The "mean transverse tooth width" can be obtained by averaging according to any method described herein, for example, longitudinally along the axis of the teeth in a certain region of the entire set of teeth and/or between any set of teeth (or subset) of the array of teeth.

In Fig. 230-230 shows that the void or gap 390, unlike the teeth, can be "wider near the top" ("near the top" is defined as the area above the mid-height level 923 in FIG. 23 and above the three-quadruple height level 925 in FIG. 230) and "narrower near the base" ("near the base" is defined as the area below the mid-height level 923 in Fig. 23C and below the three-quadruple height level 925 in Fig. 230).

The height ratio (ie, the average height in the wider area divided by the average height in the narrower area) for the void (ie, the "wider area is at the top" and the "narrower area" is at the base), but in principle, at least for the variant in Fig. 23 may be similar. Thus, the height ratio for the void can be equal to Fig. 23

C (ie, for any case with an average height level) at least 1.1 or at least 1.2 or at least 1.3 or at least 1.4 or at least 1.5 or at least 1.6 or at least 1.7, or at least 1.8, or at least 1.9, or at least 2, or at least 2.5, and for Fig. 230 (any quadruple or triple quadruple case) is at least 1.3 or at least 1.5 or at least 1.7 or at least 2 or at least 2.5 or at least 3 or at least 4 or at least 5, or at least 7, or at least 10.

As noted above, in some embodiments of the present invention, the tooth may have an asymmetric width profile, where the region closer to the base 248 of the tooth 330 tends to have a greater width and the region closer to the apex 248 of the tooth 330 tends to have a smaller width. As noted above, this may result in a situation where the top surface 280 of the screen 220 has a relatively rough topography (eg, wavy) while the bottom surface 290 of the screen 220 has a “relatively smooth” topography.

In some embodiments of the present invention, if a small cylinder 850 (eg, 1 mm or 2 mm, or 3 mm, or 5 mm, or 1 cm, or 1.5 cm, or 2 cm, or 2.5 cm) in a lateral direction beyond the top surface 280 (eg, for each pair of teeth bounded from below by the position of the minimum gap 370), then since the top surface is topographically rough, this small cylinder will move up and down as it moves across the top surface 280 as shown in Fig. 24A-24E.

The different numbers indicating the possible dimensions of the cylinder may relate to the radius of the cylinder or to the diameter of the cylinder. In one embodiment, the radius or diameter of cylinder 850 is 0.6 mm. In another embodiment, the radius or diameter of cylinder 850 is 0.8 mm. In yet another embodiment, the radius or diameter of cylinder 850 is 0.6 mm. In yet another embodiment, the radius or diameter of cylinder 850 is 1 mm. In yet another embodiment, the radius or diameter of cylinder 850 is 0.6 mm. In yet another embodiment, the radius or diameter of cylinder 850 is 1.3 mm.

Possible minimum cylinder radii (or minimum diameters) are 0.4mm, 0.5mm, 0.6mm, 0.8mm, 1mm, 1.2mm, 1.4mm, 1.6mm, 1, 8 mm and 2 mm. The maximum possible cylinder radii (or maximum diameters) are 2.5 mm, 2 mm, 1.8 mm, 1.6 mm, 1.4 mm, 1.2 mm, 1 mm, 0.8 mm, and 0.4 mm.

Different ranges can be obtained by any combination of any minimum value and any maximum value (for this characteristic or for any characteristic listed here).

In Fig. 25A-258 shows the trajectory of the cylinder from the "experiment" in Fig. 24, wherein the amplitude (ie, the deviation in the "vertical direction") of the wave oscillations and/or oscillations is specified by the value of О5С1 and can be at least 0.4 mm or at least 0.6 mm or at least 0.8 mm or at least 1 mm, or at least 1.2 mm, or at least 1.4 mm, or at least 1.6 mm, or at least 1.8 mm, or at least 2 mm. This amplitude of "oscillations" or "wave oscillations" (which ultimately describes the surface 280) can be achieved at "different" points (ie, at points "laterally" apart from each other by at least 1 mm or at least 1 .5 mm, or at least 1.8 mm, or at least 2 mm, or at least 2.5 mm) along the lateral directions, for example, at least 3 times, or at least 5 times, or at least 7 times, or at least 10 times, or at least 13 times. In a non-limiting embodiment of Fig. 24A, the lateral separation distance between these "different cases" corresponds to the substantially periodic shape (ie, in the lateral direction 260) of the surface 280. However, it is understood that the surface 280 need not be periodic.

In Fig. 26 experiment Fig. 24 is repeated with the same cylinder, but for "lower surface 290".

In Fig. 27 shows a trajectory, wherein the amplitude (ie, deviation in the "vertical direction") of the wave oscillations and/or oscillations is specified by the value 0502 and can be precisely greater than 1 mm or precisely greater than 0.5 mm or precisely greater than 0.3 mm, or exactly more than 0.3 mm, or exactly more than 0.1 mm In some variants of the implementation of this invention, to ensure the possibility of calculating the value 05602, it should occur only once. In some embodiments of the present invention, this value must occur at least 2 or 3 or 4 times or 5 or 7 times in "different lateral positions" separated from each other by at least 1 mm or 1.5 mm or 2 mm.

In some embodiments of the present invention, the value of О5С1 is greater than the value of 0502 such that the ratio between О5С1 and 05502 is at least 2 or at least 3 or at least 5 or at least 7 or at least 10. It is clear that for rounded triangles the ratio

О5С021/0502 can be quite large, however, for other shapes that are also essentially triangular (for example, if there is some kind of structure "below" the base) the 0501/0502 ratio may not be so large.

Various variants of implementation of this invention may be related to: methods of hair dyeing (for example, using an aerosol reagent for hair dyeing); hair coloring devices (for example, containing a screen 220 and an aerosol unit 400), hair coloring kits (for example, containing a screen 220 and an aerosol unit 400 or part of an aerosol unit), and to screens 220 made to facilitate hair coloring.

Thus, in some embodiments of the present invention, the screen 220 and the aerosol unit 400 may be sold separately or as a set (eg, attached to each other either permanently or removable). Thus, any "system or device comprising a screen and an aerosol unit" can also be supplied as a "set comprising a screen and an aerosol unit", where the screen and the aerosol unit can be connected to each other (e.g. , connected by attaching at least one part of each element to each other).

In one non-limiting embodiment, a single kit includes an aerosol unit and screens 220 of various lengths, such as a "short screen" with a length in the longitudinal direction (eg, from the tip to the base of the prong) of less than 4 cm or less than 4.5 cm, and "long screen" with a length in the longitudinal direction (eg tip to base of tooth) greater than 5 cm or greater than 5.5 cm or greater than 6 cm or greater than 6.5 cm (or equal to any combination ).

In Fig. 28 shows the operation of assembling such a kit into any of the systems described here.

In Fig. 29 shows a block diagram of the use of the hair dyeing device (see also Figs. 11-12).

In Fig. 30 shows an aerosol block, and the width of the hole, for example, is 0.3 mm (Fig.

ZOA) that produces relatively small droplets (eg, on average less than 100 microns or less than 80 microns or less than 60 microns or less than 50 microns) and thus the opening width may be less than 0.6 mm or less than 0 .5 mm.

One significant feature of Fig. The invention consists of having a "rectangular spray jet liner" (where, for example, the ratio of length to width is at least 1.2 or at least 1.4) so that the spray jet that is produced (see dotted line showing the actual horizontal jet shape) is a jet with a fan-like spray, having, for example, an essentially rectangular cross-section.

General description of features

As mentioned earlier, some implementations of this invention relate to an array of slots with elongated slots or to an array of teeth with elongated teeth. It will be appreciated that various properties of teeth or slits (eg, related to width profile, aspect ratio, cross-sectional shape, spacing between teeth) may not necessarily prevail for most teeth and/or for most positions along elongated tooth or slot axis (that is, within the entire tooth or slot or within a given elongated "section").

With respect to any feature or combination of features described herein for a "majority of teeth" (i.e., for some number of teeth) or for a majority of voids or slots (i.e., for some number of voids or slots), that feature (i.e., any feature or combination of features) may also be applicable in alternative embodiments of the present invention in terms of a "significant minority" (ie, at least equal to 30 95) or a "significant majority" (ie, at least equal to 70 95), or a "very significant majority" ( that is, at least equal to 90 95) teeth or voids or gaps.

Likewise, it applies to any feature or combination of features described herein for a "majority of positions" (ie, at least 50 95 positions) within a "cross-section" of a tooth or slot, or void, or screen (ie, along a longitudinal or central axis) along the longitudinal axis of the talaba along the length of the tooth and/or along the length of the slits, or along the length of the voids between adjacent teeth, this feature may also refer to a "substantial minority" (ie, at least equal to 3095) of positions within the cross-section or a "substantial majority" (ie, at least equal to 70 95) positions in the cross-section or "a very significant majority" (ie, at least equal to 90 95) of the teeth in positions in the cross-section along the longitudinal axis.

Certain features (or combinations of features) are described for "tooth sections" or "screen sections" that have a given length. For any feature or combination of features, this length may be at least 2 cm, or at least 2.5 cm, or at least 3 cm, or at least 3.5 cm, or at least 4 cm.

When a feature (or combination of features) is described for a majority or a substantial minority or a substantial majority or a very substantial majority of many slits or voids or prongs, that number of prongs or slits or voids may be at least eight, at least ten, at least twelve, at least fourteen, at least sixteen, at least eighteen, or at least twenty for any feature (or combination of features) described herein.

Any description of "majority" can also be applied to "a substantial minority" (ie, equal to at least 30 95) or a "substantial majority" (ie, equal to at least 70 95) or a "very substantial majority" (ie, equal to at least 90 95).

A person skilled in the art understands how to select the appropriate materials from which a screen or any other component should be made. In one non-limiting embodiment, the screen is made of plastic or any other material obvious to a person skilled in the art after reading this disclosure.

In some embodiments of the present invention, a kit for implementing any of the systems described herein is described. The kit may include: (i) a hair-passing screen and (ii) an aerosol unit, which, when connected together, may form any of the hair coloring devices described herein (ie, a device that includes both a screen and an aerosol unit ). In one embodiment, a single set may contain multiple screens, for example, a long screen and a short screen.

The ratio of the lengths of the two screens (when the length is measured along the longitudinal direction) may be at least 1.3 or at least 1.5 or at least 1.7 or at least 2.

In some embodiments of the present invention, any kit may contain instructions for combining and/or combining an aerosol unit and a hair screen (for example, according to Fig. 28).

In some embodiments of the present invention, when the "quick drying" hair coloring composition is applied to the hair (eg, to coat the hair), it may dry on the surface of the hair in less than eight minutes, or less than b minutes, or less than 4 minutes, or less than 2 minutes.

In general, a "quick drying" composition or reagent dries faster than water. In one embodiment, when a drop (e.g., from an eyedropper) of a "fast-drying" composition or reagent is placed on a porcelain plate at room temperature, it will dry faster than water (ie, subjected to a similar experiment with a porcelain plate). In some embodiments of the present invention, the drying time of the "fast-drying" composition or reagent may be closer to the drying time of alcohol (ie, subjected to a similar experiment with a porcelain plate) than to the drying time of water.

One essential feature of the device in Fig. 11 is that the screen is relatively long and narrow. In some embodiments of the present invention, the ratio of the length of the screen to its width is at least 1.25, or at least 1.5, or at least 1.7, or at least 2. Using a "narrow screen" (ie, a screen with a width of just over 5 cm or exactly greater than 4 cm, or specifically greater than 3 cm, or specifically greater than 2 cm), may be useful for treating "delicate areas", although this is not necessary.

First additional discussion

Thus, for the first time, a hair coloring device is described, intended for coloring hair roots, which includes: a) a screen 220, made with the possibility of penetration into the hair, which contains an array of teeth having an upper 280 and a lower 290 surface and a near 228 and a far 224 ends, and the prong array comprises at least eight (or at least ten or at least twelve or at least fourteen or at least sixteen or at least twenty) closely spaced prongs such that for a majority (or "substantial majority" or "very substantial majority") of prongs from an array of teeth: each tooth of the majority of teeth contains a main part 330 and a conical distal part 240, designed to facilitate the penetration of hair; and i) for each prong of the plurality of prongs, the main portion 330 comprises a cross-section having a length of at least 2.5 cm, where for most positions along the prong axis within the cross-section:

A) the cross-section of the tooth has an asymmetric width profile along the axis 270 of the thickness of the screen, so that the cross-section of the tooth is narrower on average near the top of the tooth 248, and the cross-section of the tooth is on average wider near the base of the tooth 246;

C) the cross-sectional area of the tooth is less than 5 mm: (in some versions of the implementation of this invention is less than 3 mm? or less than 2.5 mm", or less than 2 mm", and in other versions of the implementation of this invention is at least 0.5 mm? or at least 0.75 mm, or at least 1 mm3); and

C) the tooth is separated from the adjacent tooth in the transverse direction to ensure a minimum intermediate distance of 370, equal to a value between 0.3 mm and 1 mm, and

J) an aerosol unit 400 connected to a hair-penetrating screen, wherein the aerosol unit includes an aerosol outlet raised above the top surface 280 of the screen, and the aerosol unit is configured to dispense or "spray" a non-viscous reagent to aerosol hair dyeing in a proximal to distal direction defined by an array of teeth on the upper surface 280 of the screen 220 such that the hair permeable screen protects the space beneath the lower surface from exposure to the non-viscous hair dye reagent .

In some embodiments of the present invention, each tooth includes a tip-to-base midpoint 249 located midway between the tip 352 of the tooth and the base of the tooth 362, and in which for most of the teeth in the array of teeth and for most of the positions along the axis of the tooth within the cross section of the width ratio between : its first average width of the tooth, which describes the average width of the tooth below the average between the top and the base of the point; and iii) the second average width of the tooth, which describes the average width of the tooth above the average between the top and the base of the point is at least 1.2 (or at least 1.3, or at least 1.7, or at least 2).

In one embodiment, for most teeth and for most positions along the axis of the tooth, the width ratio is at least 1.6.

In some embodiments of the present invention, for most teeth and for most positions along the tooth axis, the cross-sectional area of the tooth is less than 5 mm or less than 3 mm.

In some versions of the implementation of this invention for most teeth and for most positions along the axis of the tooth: i) each pair of TI and T2 teeth adjacent in the transverse direction is located with the possibility of forming a corresponding intertooth lateral gap 390 located between teeth adjacent in the lateral direction in the range of heights, which has the following upper and lower limits: A) the upper limit is equal to the lower height of the top 246 of tooth TI and the top 246 of tooth 12, and B) the lower limit is equal to the upper height of the base 246 of tooth TI and the base 246 of tooth T2, and its) cross section of the corresponding between The interdental void has an asymmetric width profile along the screen thickness axis 270 such that the cross-section of the void is on average wider near the top of the interdental void 390 and the interdental void 390 is narrower on average near the base of the interdental void 390.

In some embodiments of the present invention: i) each void contains a level 923 of the average height for the void between the top and the base, located in the middle between the upper and lower limits of the height range; ii) for most teeth from the array of teeth and for most positions along the axis of the tooth within the cross-section, the width ratio between: i) the first average width of the gap, which describes the average width of the gap above the level of the average height between the top and the base of the gap; ii) the second average width of the gap, describing the average width of the gap below the level of the average height between the top and the base of the gap, is equal to at least 1.1 or at least 1.2 or at least 1.4 or at least 1.5 or at least 1.6 , or at least 1.8, or at least 2.

Thus, for the first time, a hair dyeing device is described, intended for dyeing hair roots, which includes: a) a screen 220, made with the possibility of penetration into the hair, which includes an upper surface 280 and a lower surface 290 and an array of slits containing at least eight (or at least ten, or at least twelve, or at least fourteen, or at least sixteen, or at least twenty) elongated narrow slits 480 having the property of overlapping the thickness of the screen, which are substantially oriented along the direction from the near end to the far end, and the screen 220 is made to penetrate into hair, contains a longitudinal section at least 2.5 cm long, where: i) for most of the slits in the array of slits, each slit has the property of overlapping the thickness of the screen for most of the longitudinal sections (reminder: as for the term "majority", this can include significant, and quite a significant majority); iii) the array average minimum cross-sectional slot width is in the range between 0.3 mm and 1 mm, and/or for the majority of the array slots each provides, for the majority of the minimum cross-sectional slots in the longitudinal subsection, a slot width in the range between 0 .3 mm and 1 mm (or exactly more than 0.8 mm); (ii) for most of the slits in the slit array, the aspect ratio of the slit within the longitudinal section is at least 30 (or at least 40, or at least 50, or at least 60, or at least 70. or at least 80. or at least 90. or at least 100), and the aspect ratio of the gap, which is defined as the ratio between the length of the gap within the cross-section and the value of the width obtained by averaging over the longitudinal section the width values for a separate gap with the minimum cross-section averaged over the longitudinal section; im) mass-averaged lateral distance between slits within the longitudinal section is exactly greater than C mm and/or precisely greater than a value equal to the mass-averaged gap width multiplied by C at the minimum cross-section within the longitudinal section, a screen made with the possibility of penetration into hair that includes elongated, conical penetrating elements (eg, having a minimum length of 2 mm or 3 mm or 4 mm and a length to average width ratio of at least 1.5 or at least 2) located at the far end of the screen 220; and

BYU) an aerosol unit 400 connected to a hair-penetrating screen, wherein the aerosol unit includes an aerosol outlet raised above the upper surface 280 of the screen, and the aerosol unit is configured to dispense a non-viscous hair dye reagent in the form of of the aerosol in the direction from the near to the far end defined by the array of teeth on the upper surface 280 of the screen 220 so that the screen, made with the possibility of penetration into the hair, protects the space under the lower surface from the influence of the non-viscous reagent for dyeing hair.

In some embodiments of the present invention, the laterally separated penetrating elements may be spaced from each other at a distance multiple of the width of the gap between the gaps, and/or may be designed to match the gaps.

In some embodiments of the present invention, for each slot of the plurality of slots and for most longitudinal positions within the longitudinal section, the slot exhibits an asymmetric width profile along the screen thickness axis 270 such that the slot thickness near the bottom surface 290 of the screen is narrower than that near the top surface 280 of the screen .

In some embodiments of the present invention, for most of the area bounded laterally by the first and last slot of the array of slots and within the longitudinal section, the upper surface 280 is rough relative to the lower surface 290 for a topographic scale of distances of 1 mm.

Next, a hair dyeing device is described, intended for dyeing hair roots, which includes: a) a screen 220, made with the possibility of penetration into the hair, which contains an array of teeth having an upper 280 and a lower 290 surface and a proximal 228 and distal 224 ends, and the tooth array contains at least eight (or at least ten, or at least twelve, or at least fourteen, or at least sixteen, or at least twenty) closely spaced teeth such that for a majority of the teeth in the tooth array (or a large majority or a very large majority, as for any feature): ii) each prong of the plurality of prongs includes a main portion 330 and a tapered distal portion 240 designed to facilitate hair penetration; and (iii) each prong of the majority of prongs comprises a longitudinal section having a length of at least 2.5 cm, where: A) the aspect ratio of the prong within the cross section is at least 20, and the aspect ratio of the prong is defined as the ratio of the length of the prong within the cross section to the square the root of the cross-sectional area of the tooth averaged in the longitudinal direction within the cross-section; B) for most positions within the longitudinal section of the tooth, the cross-sectional area of the tooth is less than 5 mm: (or less than 3 mm); ii) for most positions within the longitudinal section, the tooth is separated from the adjacent tooth in the longitudinal direction to provide a minimum intermediate distance 370, which is in the range between 0.3 mm and 1 mm, B) aerosol unit 400 connected to a screen made capable of penetrating hair, and the aerosol unit includes an aerosol outlet raised above the upper surface 280 of the screen, and the aerosol unit is configured to distribute a non-viscous hair dye reagent in the form of an aerosol in a direction from the near to the far end defined by an array of teeth on the upper surface 280 of the screen 220 so that the screen, made with the possibility of penetration into the hair, protects the space under the lower surface from the influence of the non-viscous reagent for dyeing hair.

Next, a hair dyeing device is described, intended for dyeing hair roots, which includes: a) a screen 220, made with the possibility of penetration into the hair, which contains an array of teeth having an upper 280 and a lower 290 surface and a proximal 228 and distal 224 ends, and the array of teeth comprises at least eight (or at least ten or at least twelve or at least fourteen or at least sixteen or at least twenty) closely spaced teeth such that for a majority of the teeth in the array of teeth: i) each of the plurality of teeth comprises a body portion 330 and conical distal part 240, designed to facilitate the penetration of hair; and iii) each prong of the majority of prongs has a longitudinal section having a length of at least 2.5 cm, where: i) for most positions within the longitudinal section of the prong, the cross-sectional area of the prong is less than 5 mm? (or less than 3 mm? or less than 2.5 mm or less than 2 mm"); ii) the tooth is separated from the adjacent tooth in the longitudinal direction to ensure a minimum intermediate distance of 370, and the ratio between the length of the longitudinal section of the tooth and the averaged in the longitudinal direction is the minimum intermediate distance for longitudinally adjacent teeth is at least (or at least 40, or at least 50, or at least 60), and the minimum intermediate distance 370 is, for most positions within the longitudinal section, a value in the range between 0.3 mm and 1 mm ; and 5) an aerosol unit 400 coupled to a hair penetrable screen, wherein the aerosol unit includes an aerosol outlet raised above the top surface of the screen, and the aerosol unit is configured to dispense a non-viscous hair dye reagent into in the form of an aerosol in the direction from the near to the far end, defined by the array of teeth on the upper surface 280 of the screen 220 so that the screen n, made with the possibility of penetration into the hair, protects the space under the lower surface from the influence of a non-viscous reagent for dyeing hair.

Next, a hair dyeing device is described, intended for dyeing hair roots, which includes: a) a screen 220, made with the possibility of penetration into the hair, which contains an array of teeth having an upper 280 and a lower 290 surface and a proximal 228 and distal 224 ends, and the array of teeth contains at least eight (or at least ten, or at least twelve, or at least fourteen, or at least sixteen, or at least twenty) closely spaced teeth such that for a majority of the teeth in the array of teeth (or for a substantial majority, or for a very a substantial majority): i) each prong of the majority of prongs includes a main part 330 and a conical distal part 240, designed to facilitate the penetration of hair; and iii) the main portion 330 of each prong of the majority of prongs comprises a longitudinal section having a length of at least equal to 2.5 cm, where for most positions along the axis of the prong within the cross section: A) the cross section of the prong is substantially triangular in shape, and this triangle points up along the 270 axis of the screen thickness; and B) the cross-sectional area of the tooth is less than 5 mmg; and B) an aerosol unit 400 coupled to a hair penetrable screen, wherein the aerosol unit includes an aerosol outlet raised above the upper surface of the screen, and the aerosol unit is configured to dispense a non-viscous hair dye reagent as of the aerosol in the direction from the near to the far end defined by the array of teeth on the upper surface 280 of the screen 220 so that the screen, made with the possibility of penetration into the hair, protects the space under the lower surface from the influence of the non-viscous reagent for dyeing hair.

Second additional discussion

Turning now to the drawings, you can see that in Fig. 1-5 shows a device for applying hair dye, made in accordance with the existing variants of implementation of this invention and, in particular, applicable for tinting hair along the parting of the hair in a quick and convenient way.

As shown in the figures, in particular in an exploded view in Fig. 5, the hair dye application device contains four main components: a spray bottle, usually indicated by position 10, designed to store a certain amount of hair dye composition; nozzle 20, attached to one end of the canister 10; screen 30 attached to the nozzle; and an outer housing 40 that surrounds the can 10 and serves as a handle for gripping and controlling the application device.

As can be clearly seen in Fig. 5, the can 10 is an aerosol can of cylindrical shape, and it can be of any known design. It contains some distributable amount of hair coloring composition, which may be in powder or liquid form; preferably, it also contains a propellant gas designed to deliver the hair coloring composition in the form of a spray jet. One end of the aerosol can 10 contains an outlet 12 in the form of a nozzle, through which the composition is supplied, and a valve, indicated by the position 14, in the normal state closed, but which opens after tilting or pressing the nozzle 12 in order to supply the composition in the form of a spray jet through the nozzle.

A nozzle 20 is removably attached to the end of an aerosol can 10, which includes a nozzle 12. The nozzle 20 includes a screen 30, which, as will be described in more detail below, exposes the root regions of the hair to be colored to a spray jet of hair coloring composition delivered through nozzle 12 when the valve 14 is open, at the same time effectively blocking the skin of the hair part of the human head from the effect of the sprayed jet of the composition for coloring hair. Screen 30 is rigidly attached to nozzle 20, but may also be removably attached thereto for replacement or cleaning. The screen and/or nozzle can be designed for single use or for repeated use.

The lower end 21 of the nozzle 20 has a cylindrical shape with an inner diameter essentially equal to the outer diameter of the aerosol can 10. One side of the nozzle 20 is made with an inclined upper wall 22, which ends in an upper frame 23, made with a protruding part 24, intended for attaching the screen 30 behind with the help of friction or a pinchable part. When the nozzle 20 is attached above the upper end of the aerosol can 10, the hole 25 in the inclined wall 22 is aligned with the nozzle 12 of the aerosol can, and the push button 25 is aligned with the valve 14 of the aerosol can. The design is such that when the push button is pressed, the nozzle 12 of the spray can is tilted or pressed to open the valve 14, in order to form a spray jet of the composition for coloring hair on the outer surface of the screen 30 through the hole 25 in the nozzle.

As can be seen in Fig. 5, the opening 25 in the nozzle 20 is located between the push button 26 and the screen 30 attached to the peripheral wall 23 of the nozzle. The nozzle 12 and the opening 25 in the nozzle are oriented so as to form a fan-shaped spray jet directed towards the near (inner) end of the screen.

The screen 30 contains teeth 31 separated from each other, located essentially parallel to the longitudinal axis I A of the aerosol can 10 and integrally formed with the help of a bar 32 located essentially perpendicular to the longitudinal axis GA. As particularly shown in fig. 3, the teeth 31 of the screen 30 are built in an essentially linear array, shifted from the longitudinal axis GA of the aerosol can. Teeth 31 have a small width and thickness and are located close to each other. Preferably, their width, thickness and spacing do not exceed 2 mm, and that they taper towards the points at their outer tips.

As will be particularly described below, when using a device for applying hair dye along a parting of the hair, the application device is controlled so that the surface Zba of the screen serves as an inner surface pressed against the skin of the hair part of the human head, and the surface 300 serves as an outer surface exposed the effect of the sprayed jet of the composition for coloring hair, which is supplied from the nozzle 12 of the aerosol can 10 through the hole 22 in the nozzle 20.

As shown in Fig. 5, the outer housing 40 of the application device also has a cylindrical shape, which coincides with the cylindrical shape of the aerosol can 10. The inner diameter of the housing 40 is essentially equal to the outer diameter of the aerosol can 10, which ensures a tight fit of the aerosol can, and it can be used as a handle for gripping and control of the application device. Preferably, the upper surface 41 of the outer body 40 and the inner frame 27 of the nozzle 20 have complementary curved configurations to create a pleasing appearance of the application device after all parts are assembled (as shown, for example, in Figs. 1 and 3).

The method of using the device for application in Fig. 1-5 is clear from the above description.

Thus, after collecting all the parts of the device, as shown in fig. 1-3, the user takes the outer housing 40, orients the screen 30 so that the surface 30a is facing and pressed against the skin of the hair part of the human head, and operates the application device so that the areas of the hair roots along the parting to be tinted are obtained in the spaces between teeth 31.

The user then presses the push button 26 to form a spray jet through the nozzle 12 on the outer side 300 of the screen 30 while moving the screen along the parting of the hair to be tinted. The spray jet of the hair coloring composition thus formed covers the areas of the hair roots exposed by the teeth 31 at the near end of the screen 30, while the other part of the screen effectively blocks the passage of the sprayed jet of the hair coloring composition to the skin of the human scalp.

After the hair dye composition has been drained from the aerosol can 10, the holder 40, nozzle 20 and screen 30 can be disassembled and applied to a new aerosol can 10.

The device for applying hair dye, in Fig. 6-10, essentially contains the same parts as the application device of FIG. 1-5, namely, includes an aerosol can 110 (Fig. 10), a nozzle 120 that is attached to one end of the aerosol can, a screen 130 attached to the nozzle; and an outer housing 140 surrounding the can 110 and serving as a handle for gripping and controlling the applicator. The main difference of the application device shown in Fig. 6-10, from the device shown in FIG. 1-5 is that the outer housing 140 and nozzle 120 are not cylindrical in shape, but rather are substantially square in shape with rounded corners for a more comfortable grip on the applicator when operating it, as well as for a more pleasing appearance of the applicator. . In all other respects, the application device in FIG. 6-10, constructed and used in substantially the same manner as described above with respect to Figs. 1-5.

Although the applicator has been described in relation to two preferred embodiments, it will be apparent to those skilled in the art that these are merely exemplary and that many other embodiments of the present invention may be practiced. For example, instead of using an aerosol can to deliver a spray of hair dye, a pump-type can can be used where the push button 26 is designed to pump out a spray of hair dye, instead of opening a valve that allows the propellant liquid inside the can create a spray jet of hair dye. In addition, the push button can be located on the side wall of the can, and not on the nozzle. In addition, the teeth of the screen may not be parallel to the longitudinal axis of the can, but, for example, make an angle with it of 90" or less.

The application devices described herein may contain any hair coloring composition suitable for coloring hair, and preferably suitable for coloring limited areas of human hair, and even more preferably suitable for coloring hair along the parting.

The hair dye composition may contain any hair dye reagent(s) (pigments) mixed with a suitable carrier (eg designed to form a hair dye composition in the form of a spray jet). It is preferable that the hair dye composition is a temporary hair dye.

Although the application devices described herein may contain any suitable hair dye formulation, the inventors of the present invention have developed hair dye reagents, formulations, and formulations specifically designed for use in these and other embodiments of the present invention.

The third additional discussion

According to one aspect of the embodiments of the present invention, there is provided a hair dye application device comprising a canister for storing a certain amount of hair dye composition, which includes an outlet at one end of the can through which the hair dye composition can be fed, and a screen which protrudes outward from one end of the can. The screen comprises a number of closely spaced prongs with inner surfaces pressed against the skin of the hair part of the human head, the root regions of the hair passing through the spaces between the prongs, and the outer surfaces being exposed to a spray of hair coloring composition delivered from a can such that the hair coloring composition covers the hair root regions passing through the spaces between the teeth, while the teeth essentially block the hair coloring composition from reaching the skin of the human scalp. The aforementioned application device is particularly useful for coloring hair along the hairline.

The term "coloring" used here describes coloring hair in a quick and easy way. This term also describes the coloring of local areas of hair, in particular local areas of gray or white hair, for example, areas of hair roots or parts thereof. The term "root region" describes the part of the hair closest to the scalp.

According to an embodiment of the present invention, the screen is attached to the nozzle at the end of the spray can, and the spray can is an aerosol can intended for supplying the composition for hair dyeing in the form of a sprayed jet through a nozzle.

As used herein, the term "aerosol can" describes any can that is suitable for releasing the composition contained within it in the form of a jet, spraying. For example, the canister must be able to withstand the internal pressure of the pressurized composition, and the nozzle must be designed to provide the possibility of releasing the pressurized composition in the form of an aerosol.

In some embodiments of the present invention, the aforementioned nozzle includes an opening aligned with the nozzle.

According to an embodiment of the present invention, the above-mentioned nozzle also contains a push button that controls the supply of the hair dye composition through the nozzle. In some embodiments of the present invention, the aforementioned hole in the nozzle, aligned with the nozzle, is located between the screen and the push button, so that the push button can be accessed through the hole.

According to the version of the implementation of this invention, the push button and the hole are located on the outer surface of the nozzle, and the nozzle is inclined relative to the screen.

According to the version of the implementation of this invention, the teeth of the screen are located at intervals parallel to the longitudinal axis of the can. It is preferable that the teeth are built as a whole in the form of a linear array, offset in the lateral direction from the longitudinal axis of the can.

According to an embodiment of this invention, the width, thickness, and intervals of the teeth are less than 2 mm.

According to an embodiment of this invention, the teeth are sharpened to a point on their outer tips.

According to an embodiment of the present invention, the paint application device additionally contains an outer housing containing the above-mentioned canister, an outer housing that serves as a handle for capturing and controlling the application device. The outer case can have any shape suitable for holding it in the hand.

According to an embodiment of this invention, both the outer casing and the canister have a cylindrical shape.

According to another version of the implementation of this invention, the can has a cylindrical shape, and the outer case has a non-cylindrical shape.

According to an embodiment of the present invention, a device for applying hair dye is proposed, which contains a can, with a certain amount of hair dye composition and an outlet at one end of the can, through which the hair dye composition is supplied, and a nozzle attached to the end of the can containing outlet, and the nozzle includes a screen. The screen includes a plurality of spaced teeth passing through the client's hair to expose the root region of the hair passing through the teeth, the teeth essentially blocking the delivery of the hair coloring composition to the client's scalp. Such an application device is particularly useful for touch-up hair along the client's parting.

According to some embodiments of the present invention, each of the hair coloring compositions described herein is identified for use in temporary hair coloring and/or in coloring white or gray hair.

According to some embodiments of the present invention, each hair coloring composition described herein is identified for use in touch-up hair along the client's parting.

In one embodiment of the present invention, any of the hair coloring compositions described herein is packaged in an application device designed to apply the composition to hair and identified for use in hair coloring as described above.

Any application device suitable for applying the composition to the hair can be used. Types of applicators include, but are not limited to, a wick applicator, a spray bottle, an aerosol can, a comb applicator, a dropper, and a pump applicator.

As used herein, the term "wick application device" means any application device containing a wick that absorbs some liquid composition, the composition being able to be applied to a surface by contacting the wick with the absorbed composition to the surface. The amount of material absorbed by the wick may be replenished, for example, by dipping the wick into some of the composition stored in the can, or a portion of the wick may be in continuous contact with the composition in the can, the composition entering the wick through absorption by the wick. The canister containing the composition can, along with the wick, serve as a component of the application device.

As used herein, the term "wick" describes a product that is capable of absorbing liquid and that allows the liquid to flow from the surface of the product.

As used herein, the term "spray bottle" includes any application device that includes a canister for holding the formulation, wherein the canister contains at least one flexible wall and the formulation can be extruded from the canister by applying force (eg, compression) to the flexible wall (- ok) spray bottle. Typically, the can contains a valve that allows the composition to exit the can under a certain pressure (such as the pressure created by a force applied to the flexible wall of the can), but prevents the composition from leaving the can in the absence of such pressure.

As used herein, the term "comb application device" includes any application device that includes a comb or brush, wherein the comb or brush has some composition adhered thereto and the composition can be applied to a surface by contact of the comb or brush with the surface The amount of composition that adheres to the comb or brush can be replenished by contacting the comb or brush with the composition stored in the can. The canister can serve as a component of the application device.

As used herein, the term "drop dispenser" includes any application device that contains a canister with a liquid formulation inside, wherein the canister contains a small opening that allows a small amount of the formulation to pass from the inside of the canister through the opening to the outer surface of the canister, resulting in the appearance of a small amount of composition (ie, drops) on the outer surface of the can. This drop of the composition can be applied to the surface by contact of the drop with the surface. The liquid composition in the canister can be replenished from a larger amount of composition stored in a larger canister capable of serving as a component of the application device.

As defined herein, the term "pump application device" includes any application device that includes a canister for storing a formulation with a pump attached thereto, wherein the formulation can be dispensed from the canister under pressure generated by the pump. The canister may include a valve that allows the composition to exit the canister under pressure applied by the pump, but which prevents the composition from exiting the canister in the absence of such pressure. The pressure applied by the pump may be generated by any means including, but not limited to, manual means (eg, a syringe), a spring, an electronic motor, or a pressurized fluid.

As used herein, the term "aerosol can" when used to describe an application device includes any application device that contains an aerosol can as that term has been defined above. An application device described as an aerosol can may contain additional components in addition to the aerosol can.

If the hair dye composition is a composition useful for coloring white and/or gray hair, the composition is preferably identified as such.

If the hair dye composition is a composition useful for temporary hair coloring, the composition is preferably identified as such.

If the hair coloring composition is a composition useful for tinting hair along the parting of the client's hair, the composition is preferably identified as such.

The application devices, hair dye reagents and hair dye compositions described above are particularly advantageous when used in combination.

Accordingly, according to another feature of the present invention, there is provided an application device as described above, wherein the hair dye composition contained therein comprises a suitable carrier and at least one hair dye reagent selected from the group consisting of a first dye reagent hair that contains a purified polymer of tannic acid with iron ions attached thereto and is essentially free of free iron ions, and a second hair dye reagent that contains a condensation polymer of a reducing carbohydrate and an amino acid, as these hair dye reagents are described herein.

Features of this composition are as described above. Preferably, in embodiments of the present invention that include an application device that releases the composition in the form of a spray jet, the composition intended for storage within the device is in the form of a spray, as described above.

As another aspect of the present invention, there is provided an application device as described above, wherein the hair dye composition for storage within the device comprises at least one hair dye reagent and a carrier comprising a hydrophobic volatile solvent, water, a glycol, and a surfactant , as described above.

Features of this composition are as described above. Preferably, in embodiments of the present invention that include an application device that releases the composition in the form of a spray jet, the composition intended for storage within the device is in the form of a spray, as described above.

As another aspect of the present invention, there is provided a hair dye composition containing both a carrier as described above and at least one hair dye reagent described above.

Additional and preferred features of the composition are as described above.

In a preferred embodiment of the present invention, the application device described above is combined with a composition for hair dyeing, containing the carrier described above, and at least one reagent described above for hair dyeing.

Additional objects, advantages, and features of the present invention will become apparent to one of ordinary skill in the art upon examination of the following embodiments, which are not intended to be limiting. In addition, each of the various implementation options and aspects of this invention, described above and indicated in the claims, find experimental confirmation in the following options.

It is absolutely clear that certain features of the invention, which for clarity have been described in the context of individual variants of implementation of this invention, can also be presented in the form of a combination in a single variant of implementation of this invention. On the contrary, the various features of the invention, which for the sake of brevity have been described in the context of a single embodiment of the present invention, may also be presented separately or in the form of any convenient subcombination.

Although the invention has been described in connection with certain embodiments thereof, it is obvious that many options, modifications and variations will be apparent to those skilled in the art. In accordance with this, the invention is intended to include in its composition all such options, modifications and variations that fall within the scope of the substance and scope of the appended claims. All publications, patents, and patent applications mentioned in this specification are hereby incorporated by reference in their entirety to the same extent as if each individual publication, patent, or patent application were specifically and individually noted. as those incorporated herein by reference. Furthermore, the citation or indication of any reference in this application should not be construed as an admission that such reference represents the prior art with respect to the present invention.

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Fig. 23А 246VA. и З30"7в азс зз0'в и и Ше шо ше

Above 2494 2 E І І i : : i :

I | g CI Minimal. The minimum density of fluid solutions is Uy sia

Below 249 I de V. Te That. sa tt 7590 chu What a / I id and Her ri | ZA 2488 call 2486 704 2АВО 2490 and Serednya | th point 249A 2438 Gifts 2496

SHIELDED PULLEY 460 heads!

Longitudinal axis from screen 276

Longitudinal axis 250

Fig. 238 zm blyukya (34 closer to I vo shiv) 702

R V

! 246A iz ' BA zzo"v z30 zo sy vavv. sha shi

Above E with ; 2394 HER KE 950 . ik nyu i Pe her s

Ka "y Minimal: Minimal is I Kk and -. slit slit che vhrya; / | uk, nir ra

Below. is Shi vo -y 7 She 290 za9A Yi yi 1 i yi yi !

MBA since 2488) 37uv 218C and 704 2580 2450

OA 2498 2890 (Zk olizhche to the axis of the base) yadovzh tovIzhN! screen 279) A

KMozlovzhnaya axis 2

"horn. 23 246 245С the evil zone of the hom ozh chy zh lakav vm raka Zkva m ham mok -k oyu Nerhnya meza 521 ' from the region 399 p. Ten nozhozhove comeeoomekokomee ho yueefnosnee in every skin

Level 9525 of the average ti Z90B t» height of the region 3995 How he.

But hey hey SHU I M My tk

The lower limit is 919 ra | in the region 3908 st and 24186 2485 along

HOVYSHINI screen o -

Longitudinal axis 250

Thebes 231) 246.

Level 975 of three quadruple | and it is 3908 meters high in the ZO region. they and

With TV

Level 927 is one of the quadrilaterals of ZOBU, at the height of obnakzi 390 nin mn pln s p CHI

I'm a basket of NN. probably the ram is the same as the ZHBKOH, the same is the linguistic cut

ShPshyzhny meza 219 shcha oblast 3998 24883 2avs

The Y axis depends on the thickness. screen 270

Longitudinal axis 250 "Axis. 24A pi.

Frame 15 time -0; position RI cylinder 850 zzoi 330 zzok ZO. zh Sak. 5" rak i - "i sv" i", Ky DK", Ku GK, KU r 280

Yes, yes, yes, yes, yes, yes, yes, yes, yes, yes, yes

It is about. "HK, "ZhK "OK. 850 ooo moe "oyu OK 4 sya ru ak ia, i oka i o i a A; KA, Z,

KhM KM, yuyu KM yuyuyu ki Fe g i o a vk i i yav zh: "ze z eeasekssssavteossogsvastovozyoogtuestoovvonvooe

Fe

The axis of the screen thickness is 270

Side axis 260

Yang. 248

Frame 2; time -(2; position P2 of cylinder 950) en

ZO ZO zzoK ZO. tsu (voi yav, pri zb, y KO. ee, ml is a, "ok z yuk pi "ke y "HK. ih yu, "KU hey, 280 "Yakim. Kk zhya, eh zhi sa Vya rovu RI vva a a riv of a lion CHI stvo Du same: "yuyu. rhymes Mini, yuka "y Yu "rn m o a

DYM svv vezheva vve fe ve»gaaz»oivov»v veze zvaviev

The axis of vadovzh tavshtsyvy. from Ukraine 270 eovnnnnnnnnnn i

Longitudinal axis 250

Chig, 24

Frame 3; time 3; the position of RZ cylinder 850

Thank you

ZO zo zz3oK ZO. 850 of them, pt pcs, cha

B, NN eh OK uh ah U», ie Ko ie naya ek, Kyfyak Kv uch royu yuey syu yuyu "yuki 980

Or, i yu, Shov, Iyu Ko «lo kory y s: St ?oezyuovyetosnoveeeovovavosvvasvykavtsovatovkvoovov tu y

The axis of the vazlovzh screen thickness is 270 cells

Longitudinal axis 7250

"Is. 240

Frame I: chayes-- I; position RA cylinder 850 povo

ZO Zo zzoK Zo.

HA; dovo, ze zak ra o - eh. with, Shi "MUK. eh GU yo

In "Mor. Y HUH le rivok BY vv pivo B ovo ;

Be, and nya A 280 oo o in vo. um s eevzvavevaz gaz ssgozzoovez och» azyuovya sova

The axis is the same thickness. , screened on Friday, 27

Longitudinal axis 250 "horn. 24K; polo Frame 5; time of position P5 of the cylinder 850 . .

From 230 zzoK ZO. ay zba tla with "Y, и - и "VOK, Dy,

Rys r ad ru la g u. and again ek, MOSS yu "KD, "ki VO AK, AK, Ks ya yo, imya, yuyu i. 280

Axis

ALONG screen thickness 270

Longitudinal axis 250

Fi. AND

Frame both time -; the position of the Ro cylinder is 550 r in

ZO Z300 zzoK ZZ0 saaki Y otv 7" ab.

IK", Kv be o IZHYA ih ey KO.

Ж Ш ШО Кк ре а а ; eh

DEKO and Kk

M i u yKinyuua SYHYUYUUUK. 280

I ves tsoptesafoaovrozfezavvstoa»oozovatovnezovaz

The longitudinal axis of the screen is 279

250 "horn. 253A

NRIBL IYZNA TRAJECTORY OF THE CENTER OF THE CYLINDER 850 RY

MUCH DISPLACED WITH RESPECT TO FIG. 23 FOR.

AXIS UPPER SURFACE 2850 ALONG SIDE 276

Distance

Sht t between the peaks of shk "z 7 s m" e,

Y Ku 7, m z. k z g te

Amplitude. r. I « tk I y «e M sdedttyu 2 is gr e e iya Kk t oesdylations g her U GK s

Ж жо б я ж в» ия и уч M и m я и aa a a o A

Lateral axis 260)

Fig. 25

APPROXIMATE TRAJECTORY OF PENTRU CYLINDER 850 PRI

MUCH MOVED ACCORDING TO "RUN, 23. ZA.

UPPER SURFACE 280

Screens hung along the thickness: 270 in

BAN. I'm what I am, I'm still a spade, K . и и з, Kz: «t -

Amplitude of Kk Zap" tva oscillations of Zina 7 now about in knowledge

Lateral axis 200)

"horn. 26A

Frame. eat times; the position of ОЙ vplindra 850 snu knviny

ZOY with z3ok ZO. 7 "tt, te aso i sho Fa s Yak SYA g sia z p Sk ia gu y a KU Me, "MOH. гу ж "3 "OA I, PI av "ik zhi ""ЯйХХыК "АЮ, КИ о. "ISeHA, ee ekyu, Ka: "khi, skev KM j ot v y yn cho yuyu oyu, KOYU "ih, 80 ih yuyuyu, KK, KK, Ki Ky

Su biv Ya - noty Z oko chiny chn Z R y v 1 per "uostecovasvagvoganovatefvovooeetevkvvovchoavechevavev

Su 290 "Fig. 268

Frame K chaye "02: position 02 of cylinder 850 : I zo 3304 zzok 30. za zi a Roth "ke vocho Kon ah shchy y y 9 K « eV, Ky. yo ko Yar» keV KK. r "m "oy. uh zo, ik it po zha i syu,

OS, DL MYU "kih, 980 ee In Do s a o Ak v do de "zevvgovvovgoyazovevkovezadvvevoavvvvtsaovaaekvyuyo v ( 850) 290 ig. 266

Frame Z; times; position 003 of the cylinder 850 i and slia Y t

ЗЕ 330 зЗзоК ЗзОи. ru yah rr ie y « y a V, y a, (Z Rode chuzvy same eh ah B z a ooya U y u KU oo. « ky

OSY ram i oz U ol i i i o AH syu ovo gy yuyu 280 oyu ik yuyu yuyu iz At ; оди и о - х Village o z shwa i a "de r: zh vovzvoevevvyuovabyvoovvevatvvyafzhazh y avzhezh 05) 290

"horn. 27

APPROXIMATE TRAJECTORY OF THE CENTER OF THE CYLINDER, 850 CRY.

ITS DISPLACEMENTS ACCORDING TO FIG. 253A

ON ALL SURFACES

Axis Kk. - VIOvVzh screen thickness 270 "what kind of ariykhii ovaktiv

Today's Amilitude, as a Henzhkannai shchi with the help of the oscnlations of Sekanin

Business axis 20 "g. 28

Create an aerosol node ZO, | Y : sCvorvti screen 51015 y

Connect the verozol high school z1011 with the screen 51015

Fig. 29 Bring 5121) to the hair along the prodit.

Use the screen with a straight chin so that: si) the back surface 290 of the screen 220 is dry parapsl to the plane of the picture of the hair part of the head and is pressed along No, (H) Hair entered the slits; formed in the spaces between adjacent teeth in the transverse direction for penetration into the area of the screen.

Spray 51213 hair coloring composition in the form of sad over-surface surface 250 of the screen 200 to cover the hair which: goes through the screen (that is, the hair that passes the screen in the srtcal direction) from the lower part of the lower surface to the upper part of the upper surface (genriclaz, hair roots).

Fig. FOR. and v.v vav

In her

Votavkhv; received from 06.65 dent; oh me

Activator, obtaining MOH X and I and

Still more

RI

Fig. 306 writes 4 cha Orientations stgrumezhy spraying -with wounds

I SM / a and ki

Claims (8)

1. A device for dyeing hair, intended for dyeing the roots of hair, which contains: a) a screen 220, made with the possibility of penetration into the hair, containing an array of teeth, which has an upper 280 and a lower 290 surface and a near 228 1 far 224 end, and the array of teeth includes at least eight closely spaced teeth such that for a majority of the teeth of the array of teeth: i) each tooth of the plurality of teeth includes a main portion 330 and a tapered distal portion 240 designed to facilitate hair penetration; and1 1) the main part 330 of each prong of the majority of prongs includes a section having a length of at least equal to 2.5 cm, where for most positions along the axis of the prong within the specified cross section: A) the cross section of the prong has an asymmetric width profile along the axis of 270 of the thickness of the screen , so that the cross-section of the tooth is narrower on average near the top of the tooth 248 and the cross-section of the tooth is wider on average near the base of the tooth 246; C) the cross-sectional area of the tooth is less than 5 mm' and C) the tooth is separated from the adjacent tooth in the transverse direction to provide a minimum intermediate distance 370, which is in the range between 0.3 mm and 1 mm, 1 b) the aerosol unit 400 connected to a hair-penetrating screen, wherein the aerosol unit includes an aerosol outlet raised above the upper surface of the screen, and the aerosol unit is configured to dispense a non-viscous hair dye reagent in the form of an aerosol in a direction from the proximal to the distal end defined by the array teeth on the upper surface 280 of the screen 220 so that the screen, made with the possibility of penetration into the hair, protects the space under the lower surface from the influence of the non-viscous reagent for dyeing hair. 2. The hair coloring device of claim 1, wherein each prong includes a midpoint between the apex and the base located midway between the apex of the prong 352 and the base of the prong 362, and in which for most of the prongs of the array of prongs and for most positions along the axis of the prong within the specified section, the width ratio between: 1) the first average width of the tooth, which describes the average width of the tooth below the average between the apex and the base of the point; 1 ii) by the second average tooth width, which describes the average width of the tooth above the average between the top and the base of the point is at least 1.2. 3. The device for coloring hair according to claim 2, in which for most of the teeth and for most of the positions along the axis of the tooth, the width ratio is at least 1.6. 4. The device for coloring hair according to any one of claims 1-3, in which for most of the teeth 1 for most of the positions along the axis of the tooth, the cross-sectional area of the tooth is less than 3 mm". 5. The device for dyeing hair according to any of claims 1-4, in which for most of the teeth 1 for most of the positions along the axis of the tooth: i) each pair of T1 and T2 adjacent in the transverse direction of the teeth is located with the possibility of forming a corresponding interdental lateral gap 390 , located between adjacent teeth in the lateral direction in a height range that has the following upper and lower limits: А) the upper limit is equal to the lower height of the top 246 of tooth TI 1 of the top 246 of tooth 12.1 B) the lower limit is equal to the upper height of the base 246 of tooth T 1 1 of the base 246 of the tooth 12, 1 i) the cross-section of the corresponding interdental cavity has an asymmetric width profile along the axis 270 of the thickness of the screen, so that the cross-section of the cavity is wider on average near the top of the interdental cavity 390, and the interdental cavity 390 is narrower on average near the base of the interdental cavity 390 . 6. A hair coloring device according to any one of claims 1-5, in which: i) each void contains an intermediate height level for the void between the top and the base, located midway between the upper and lower limits of the height range; i) for most teeth of the tooth array and for most positions along the axis of the tooth within the specified section, the width ratio between: A) the first average width of the void, which describes the average width of the void above the level of the average height between the top and the base of the void; C) the second average width of the void, which describes the average width of the void below the level of the average height between the top 1 and the base of the void, is at least 1.2. 7. A device for coloring hair according to any one of claims 1-6, in which the array of teeth contains at least fourteen closely spaced teeth. 8. A hair-penetrating screen 220 comprising an array of teeth having an upper surface 280 1 a lower surface 290 and a proximal end 228 1 a distal end 224 , the array of teeth comprising at least eight closely spaced teeth such that for of the majority of teeth from the array of teeth: i) each tooth of the majority of teeth includes a main part 330 and a conical distal part 240 designed to facilitate the penetration of hair; 1 11) the main part 330 of each tooth of the majority of the teeth contains a longitudinal section having a length of at least equal to 2.5 cm, where for most positions along the axis of the tooth within the specified section: A) the cross section of the tooth is essentially triangular in shape, and this the triangle points up along the 270 axis of the screen thickness; and B) the cross-sectional area of the tooth is less than 5 mm".