JP5416382B2 - Double layer cosmetic - Google Patents

Description

  The present invention relates to a two-layer cosmetic that contains a glittering powder, is beautiful in appearance, and can be uniformly applied in a mist form. More specifically, the lower layer containing the glittering powder has a beautiful appearance with two distinct layers, and the two layers are easily mixed when used to form a suspension in which the glittering powder is uniformly dispersed. The present invention relates to a two-layer cosmetic that is mist-like and can be applied uniformly over a wide area. Furthermore, the present invention relates to a two-layer cosmetic that is excellent in moisture feeling of the skin, has high adhesion of glittering powder, and has excellent storage stability, and is used by spraying in a mist state at the time of use.

With regard to cosmetics containing powder, development of characteristic preparations as well as the feeling of use is required in order to improve consumer preference.
Conventionally, the development of water-based cosmetics containing powders has been diverse, and the considerations have been directed to controlling conditions such as prevention of caking during standing, suppression of powder settling, and improvement of redispersibility during shaking. It was. As means for preventing caking and improving redispersibility, addition of a dispersing agent such as an aggregating agent such as a water-soluble salt or a surfactant (Patent Document 1), selection and modification of a powder (Patent Document 2, The technique 3) is known. Further, as a means for maintaining the dispersed state, there is known a technique for suppressing sedimentation of powder by adding water-swellable powder (Patent Document 4) or agar (Patent Document 5). Furthermore, a technique is known in which a hydrosol is formed to hold a powder, and as a two-layer type of an aqueous layer and a powder layer, sedimentation is suppressed to some extent and caking is prevented (Patent Document 6).

  On the other hand, among cosmetics containing powders, water-based cosmetics containing glittering powders are preferred and used mainly as perfume compositions (fragrances) for the purpose of producing a beautiful appearance. The use of glittering powders is not only beautiful in appearance but also in producing beautifully attractive skin, so it can be applied not only to topical use such as fragrance, but also to a wide range of parts such as arms, legs, and decollete. Use is required. The above technology has been used in the same way for aqueous cosmetics containing glitter powder, but in order to achieve the beauty of appearance and the improvement of usability at the same time with glitter powder, It was not enough.

  For example, in the methods of Patent Documents 1, 2, and 3, the bulk of the powder layer cannot be obtained, and the powder is spread on the bottom of the container at the time of standing. Limited to time and a short time thereafter. When the sedimentation of the powder is suppressed as in Patent Documents 4 and 5, the characteristic of the glittering powder that gives the shine by moving continuously and changing the angle is suppressed. As described above, in order to fully exhibit the unique beauty of the glittering powder, both at the time of standing and at the time of shaking, a method was required in which the powder was not allowed to settle completely while being shaken. . The technology for holding the powder by forming the hydrosol of Patent Document 6 has such conflicting elements and is suitable for creating an appearance unique to the glittering powder. However, since the technique of Patent Document 6 has been used for a preparation such as a calamine lotion that contains a powder and provides a refreshing feel, the function of applying and retaining a glittering powder cannot be satisfied. Further, in the sedimentation process, the irregularly shaped hydrosols settled irregularly, making the interface unclear and detracting from aesthetics.

In addition, the mist spray using a dispenser container is considered effective for improving the usability of uniform application to a wide area. However, in the methods of Patent Documents 1, 2, and 3, the powder settles quickly and uniform spraying cannot be performed. Moreover, in the methods of Patent Documents 4 and 5, the viscosity is high and uniform spraying with fine droplets cannot be performed.

Japanese Patent Application Laid-Open No. 2004-262887 JP-A-6-271419 JP-A-6-336558 JP-A-8-259434 JP-A-11-116432 Japanese Patent Publication No.6-21056

  Under such circumstances, the object of the present invention is that the lower layer containing the glittering powder has a beautiful appearance in which the two layers are clearly separated, and the two layers are easily mixed when used for shaking. It is an object of the present invention to provide a two-layer cosmetic that can form a suspension in which a uniform dispersion is formed, is mist-like, and can be uniformly applied to a wide area. Another object of the present invention is to provide a two-layer type cosmetic that is excellent in moisture feeling of the skin, has high adhesion of glittering powder, and has excellent storage stability, and is used by spraying in a mist during use.

  That is, the present invention contains (A) a water-soluble aluminum salt, (B) an alkali metal salt, (C) a glittering powder, (D) a solid or pasty polyoxyethylene-added vegetable oil at 25 ° C., It is a two-layer cosmetic characterized in that the molar ratio (A) / (B) of aluminum ion of component (A) and alkali metal ion of component (B) is 0.8 to 2.0, preferably Is a two-layer cosmetic with a content of (A) water-soluble aluminum salt of 0.05 to 3% by mass and (C) a content of glittering powder of 0.01 to 1% by mass.

  In the present invention, the water-insoluble hydrosol formed from (A) a water-soluble aluminum salt and (B) an alkali metal salt has a restricted sedimentation property (the property that particles are bound to each other by chain aggregation and settle together). And (C) a method of holding the glittering powder only in the lower layer. As a result, when standing, the transparent upper layer and the lower layer containing the glittering powder have a beautiful appearance with two layers separated clearly, and when using for shaking, the two layers are easily mixed to make the glittering powder uniform. It is possible to provide a two-layer cosmetic that can form a dispersed suspension, is mist-like, and can be uniformly applied to a wide range of sites. Furthermore, (D) a two-layer type cosmetic that has a solid or pasty polyoxyethylene-added vegetable oil at 25 ° C., is excellent in moisturizing skin, and has high adhesion to glitter powder. Can be provided.

  Hereinafter, embodiments of the present invention will be described in detail.

  Examples of the component (A) water-soluble aluminum salt used in the present invention include aluminum sulfate, aluminum potassium sulfate, aluminum nitrate, basic aluminum chloride, allantochlorohydroxyaluminum, phenol sulfonate aluminum, and aluminum citrate. .

  The component (B) alkali metal salt used in the present invention is an alkali metal that is easily soluble in water and can react with the water-soluble aluminum salt as component (A) to form a hydrosol when contained in the composition. An acid selected from the group consisting of primary phosphoric acid, secondary phosphoric acid, tertiary phosphoric acid, pyrophosphoric acid, polyphosphoric acid, methacrylic acid, carbonic acid, citric acid, succinic acid, tartaric acid, and lactic acid. Sodium salt or potassium salt, sodium hydrogen carbonate, potassium hydrogen carbonate and the like.

  Component (A) water-soluble aluminum salt and component (B) alkali metal salt can control a sedimentation rate by adjusting the molar ratio and content of the water-soluble aluminum salt of component (A). Thereby, the dispersion state at the time of shaking is kept uniform for a sufficient time to use the two-layer cosmetic of the present invention, and uniform spraying in the dispenser container is also possible. In addition, in the sedimentation process after use, the appearance of random accumulation of irregularly shaped hydrosols has been detrimental to the appearance, but the appearance of glittering powder entangled in the hydrosol and the simultaneous sedimentation has a characteristic aesthetic. In addition, it is possible to provide a two-layer cosmetic that is beautiful even in the sedimentation process.

  The preferred molar ratio (A) / (B) of the aluminum ion of component (A) to the alkali metal ion of component (B) is 0.8 to 2.0, more preferably 1.0 to 1.8. . Within this range, the formation of the hydrosol is stable, the glittering powder is sufficiently retained, and the sedimentation rate can be suppressed. Also, in terms of long-term stability, the formed hydrosol is stable and does not cause skin irritation without affecting pH fluctuations.

  Content of a component (A) is 0.05-3 mass% with respect to the weight of a composition, Preferably it is 0.1-1 mass%. Within this range, the hydrosol can sufficiently hold the glittering powder and prevent caking of the powder. In addition, the sedimentation rate of the powder layer is suppressed, and the glitter is not disturbed in appearance.

  The component (C) glittering powder used in the present invention is used for producing a three-dimensional effect by shining skin. The glittering powder used in the present invention is not particularly limited in the form of plates, spindles, needles, etc., and porous, non-porous particles, etc. Can be used without Specifically, mica titanium, iron oxide coated mica titanium, bitumen coated mica titanium, ultramarine coated mica titanium, carmine coated mica titanium, iron oxide coated mica, organic pigment coated mica titanium, titanium oxide coated synthetic phlogopite, titanium oxide coated Glass powder (glass flake), bismuth oxychloride, bismuth oxychloride coated with titanium oxide, fish scale foil, aluminum powder, polyethylene terephthalate / aluminum / epoxy laminated powder, polyethylene terephthalate / polyolefin laminated film powder, polyethylene terephthalate / polymethyl methacrylate laminated film powder Etc. In the component (C), it is preferable that the average particle diameter is 20 to 100 μm, because regular reflection of light is likely to occur well, and the effect of shining the skin and producing a three-dimensional effect becomes higher. As a method for measuring the particle size of the powder, for example, measurement of the length of the powder with an electron microscope, a commercially available particle size measuring device such as a Coulter Counter (manufactured by Coulter Electronics), or a laser diffraction particle size distribution measuring device. It can be obtained with a particle size distribution measuring device such as (Microtrack II, manufactured by Nikkiso).

  Ingredient (C) floats in the liquid phase at the time of use to produce a beautiful appearance, and to give a good glitter to the skin after use, glass flakes coated with metal or metal oxide Is preferred. Specifically, examples of commercially available products include Metashine GG series, PS series, NS series, NB series, RS series, and RC series (manufactured by Nippon Sheet Glass Co., Ltd.).

  The average particle size of the component (C) is preferably 1 to 500 μm, more preferably 20 to 100 μm. If it is this range, the beautiful glittering characteristic which is the characteristics of this invention can fully be obtained, the usability | use_condition at the time of application | coating is also favorable, and the two-layer cosmetics which can be apply | coated by a mist form can be obtained. The average particle size is 50% particle size D50 of the particle size of the powder measured using a laser diffraction type particle size distribution measuring device (Microtrack II, manufactured by Nikkiso).

  The content of component (C) is preferably 0.01 to 1% by mass, more preferably 0.03 to 0.5% by mass. Within this range, it is possible to sufficiently obtain a beautiful glitter on the skin without the appearance of glare. Further, even in a mechanism unit such as a dispenser used for spraying in a mist state, a two-layer cosmetic that can be uniformly applied in a mist state can be obtained without clogging the powder.

  Component (D) used in the present invention is a solid or pasty polyoxyethylene-added vegetable oil at 25 ° C., jojoba oil, almond oil, avocado oil, olive oil, corn oil, safflower oil, sunflower oil, mango oil, Meadowfoam oil, shea butter, castor oil, camellia oil, persic oil, coconut oil, macadamia nut oil and cocoa butter are added with vegetable oil and fat, among them solid at 25 ° C, Or it shows a paste form.

  Here, being solid or pasty at 25 ° C. means having a melting point of 25 ° C. or higher, preferably having a melting point of 30 ° C. or higher. With such properties, the skin after application is kept moist and the adhesion of the glittering powder is improved.

  The polyoxyethylene addition rate of component (D) is preferably one obtained by adding about 60 to 140 units of ethylene oxide to one molecule of vegetable oil and fat in order to further improve the adhesion of the glittering powder. Furthermore, HLB16 ~ 20 are more preferred because they dissolve easily in aqueous cosmetics.

  As the component (D), polyoxyethylene jojoba oil is suitable for improving moisture feeling.

  A commercial item can also be used for the said component (D) as it is. Examples of the polyoxyethylene jojoba oil include FLORASOLVS PEG-80 and PEG-120 JOJOBA (trade names, both manufactured by Flora Tech).

  The content of the component (D) is preferably 0.01 to 5% by mass because the above effects can be sufficiently obtained while suppressing the stickiness and stiffness peculiar to polyoxyethylene-added vegetable oils. More preferably, the content is 0.05 to 3% by mass.

  In the two-layer cosmetic of the present invention, components usually used in cosmetics as optional components, such as humectants, oils, surfactants, thickeners, viscosity modifiers, sebum adsorbents, sequestering agents, antioxidants Agents, ultraviolet absorbers, drugs, plant extracts, essential oils, pigments, fragrances, preservatives, pH adjusters and the like can be used in combination.

  The two-layer cosmetic of the present invention can be used by spraying in the form of a mist at the time of use, and can be used by filling various types of spray containers. Therefore, it is preferable to use a non-gas type spray dispenser container. In addition, in this invention, a non-gas type means that it is not an aerosol product which discharges the content using compressed gas, such as liquefied petroleum gas, ether, and Freon gas. Moreover, in order to spray in a uniform mist shape, the tip diameter of the dispenser container is preferably 0.2 to 0.6 mm, and more preferably 0.3 to 0.5 mm.

  EXAMPLES Hereinafter, although an Example and a comparative example demonstrate this invention concretely, this invention is not limited by this. In addition, the compounding quantity in an Example is the mass%.

  Prior to the examples, evaluation methods will be described below.

(1) Appearance at rest Place the uniformly dispersed sample composition in a transparent glass bottle (diameter: 4 cm, height: 11 cm) to a height of 8 cm, and leave it in a thermostatic bath at 25 ° C, 5 ° C, 45 ° C for 3 months. Then, the state of the powder layer and the glitter when standing were determined by visual observation.
<Criteria>
(A) The state of the powder layer at the time of standing ○: There is a bulky (dispersed state without agglomeration), and it is clearly separated into two layers Δ: Bulky (dispersed without agglomeration) Although there is a powder layer), the interface is unclear ×: The powder layer is not bulky −: The water layer and the powder layer are not separated (b) Brightness when left standing ○: Appearance glitter is recognized when powder is retained Δ: Powder is retained, but water layer and powder layer are turbid and appearance glitter is poor ×: Does not retain powder, glitter Is not allowed

(2) Uniform miscibility at the time of shaking The sample of (1) was shaken manually manually up and down, and the number of shakings required until the two layers of components were uniformly mixed was investigated. In addition, it is preferable that the required number of shakings is less because there is no need for shaking.
<Criteria>
◎: The required number of shaking times is 1 to 3 ○: The required number of shaking times is 4 to 6 Δ: The required number of shaking times is 7 to 10 times ×: The required number of shaking times is 11 times or more −: The water layer and the powder layer are separated. Not

(3) Appearance during sedimentation 50 mL of sample composition is placed in a measuring cylinder with a stopper, and shaken up and down manually to mix and disperse the components of the two layers uniformly. The speed (volume of the powder layer) and brightness were determined by visual observation.
<Criteria>
(A) Sedimentation rate O: Suppression is suppressed when the bulk of the powder layer is 45 mL or more. Δ: Sedimentation is suppressed slightly when the bulk of the powder layer is less than 45 mL. X: There is no bulk of the powder layer. Settling is not suppressed (b) Brightness during settling ○: Appearance with shimmering of bright powder is observed Δ: Turbidity of water layer, powder layer, interface clarification, powder By fixing the body
Appearance is inferior x: Appearance is not recognized

(4) Feel at the time of use, finishing after application The two-layer cosmetics of the examples and comparative examples are used for 20 professional panels, and the feeling at the time of use (moisture feeling), after application The finish (adhesiveness of the glittering powder) was subjected to a sensory test and evaluated according to the following criteria.
<Criteria>
(A) Feel during use (moisture feeling)
◎: More than 15 people on the panel are judged to be moisturized ○: 10 to 14 people on the panel are judged to be moistened △: 5 to 9 people on the panel are judged to be moistened ×: Less than 4 people on the panel are moistened (B) Finish after coating (adhesion of glittering powder)
◎: More than 15 panelists judged good adhesion ○: 10-14 panel judged good adhesion △: 5-9 panel judged good adhesion ×: 4 panelists The following is judged to be good (c) Irritation ○: 19 or more people on the panel are judged not to be irritating Δ: 15 to 18 people on the panel are judged not to be irritating ×: 14 people or less on the panel are judged Not determined to be irritating

(5) Usability of container (sprayability)
200 g of each sample was placed in a container equipped with a dispenser type sprayer (Y-150, nozzle tip; straight type hole diameter 0.4 mm, manufactured by Yoshino Kogyo Co., Ltd.) and sprayed to visually observe the fog state. Ten samples were prepared, sprayed 10 times a day and used repeatedly until they were used up, and the presence or absence of clogging was confirmed.
<Criteria>
○: A uniform mist was sprayed until the end. △: A uniform mist was not formed. ×: A clogging that could not be sprayed in a mist occurred.

Examples 1-11, Comparative Examples 1-8
The components shown in Table 1 were mixed and dispersed uniformly to prepare a two-layer cosmetic, and the above tests were carried out. The results are also shown in Table 1.

  As is clear from Table 1, the two-layer cosmetics of Examples 1 to 11 using the components of the present invention exhibited excellent characteristics in any evaluation item.

  On the other hand, in Comparative Examples 1 to 8, any one of the appearance at the time of standing, the uniform miscibility at the time of shaking, the appearance at the time of sedimentation, the touch at the time of use, the finish after application, the irritation, and the usability of the container And the object of the present invention could not be achieved.

  Hereinafter, the formulation example of the two-layer type cosmetic according to the present invention will be given as examples. In addition, when said test was examined also about the two-layer type cosmetics of these Examples, in any Example, it had the outstanding characteristic and was favorable.

Example 12 (body lotion)
Blending amount (% by mass) (1) Chlorhydroxyaluminum (A) 0.13
[Al ₂ (OH) ₅ Cl · 2H ₂ O, molecular weight 210.483]
(2) Disodium phosphate (B) 0.14
[Na ₂ HPO ₄ · 12H ₂ O, molecular weight 358.142]
(3) Titanium oxide coated glass flakes (C) 0.05
(Product name: Metashine MC-1080, manufactured by Nippon Sheet Glass Co., Ltd., average particle size of 80 μm)
(4) Polyoxyethylene jojoba oil (D) 0.1
(Product name: PEG-120 JOJOBA, manufactured by Flora Tech)
(5) Glycerin 2.0
(6) Silk extract 0.1
(7) Royal jelly extract 0.1
(8) Rose water 0.1
(9) Fragrance 0.1
(10) Ethanol 10.0
(11) Purified water balance

(Production method) Component (1) is added to a part of the component (11) with stirring, dissolved and dispersed, and then the component (2) dissolved in the remainder of the component (11) is gradually added with stirring. After mixing, the mixture of (4) to (5), (9) and (10) and (6) to (8) and (3) were added to obtain a body lotion. In this case, the molar ratio (A) / (B) of the aluminum ion of the component (A) and the sodium ion of the component (B) is 1.6.

Example 13 (styling lotion)
Blending amount (% by mass) (1) Aluminum nitrate (A) 0.5
[AlN ₃ O ₉ , 9H ₂ O, molecular weight 375.13]
(2) Disodium phosphate (B) 0.18
[Na2HPO4 / 12H2O, molecular weight 358.142]
(3) Titanium oxide coated glass flakes (C) 0.05
(Product name: Metashine MC-1040, manufactured by Nippon Sheet Glass Co., Ltd., average particle size 40 μm)
(4) Polyoxyethylene jojoba oil (D) 0.5
(Product name: PEG-80 JOJOBA, manufactured by Flora Tech)
(5) Glycerin 2.0
(6) Polyoxyethylene / perfluoropolysiloxane 1.0
(7) D-pantothenyl alcohol 0.1
(8) Disodium L-ascorbic acid sulfate 0.0001
(9) Glycine 0.001
(10) L-proline 0.001
(11) L-alanine 0.0004
(12) Yukinoshita extract 0.005
(13) Murasaki assembly extract 0.005
(14) Honey 0.1
(15) Fragrance 0.5
(16) Ethanol 20.0
(17) Balance of purified water

(Production method) Component (1) is added to a part of component (17) with stirring, dissolved and dispersed, and then the component (2) dissolved in the remainder of component (17) is gradually added with stirring. It mixed, and it melt | dissolved and disperse | distributed to others, the mixture of (4)-(7), (15) (16) and (8)-(14), (3) were added there, and the styling lotion was obtained. In this case, the molar ratio (A) / (B) of the aluminum ion of the component (A) and the sodium ion of the component (B) is 1.3.

Example 14 (Fragrant Water)
Blending amount (% by mass) (1) Aluminum nitrate (A) 0.5
[AlN ₃ O ₉ , 9H ₂ O, molecular weight 375.13]
(2) Sodium citrate (B) 0.13
[C6H5Na3O7 ・ 2H2O, molecular weight 294.1]
(3) Titanium mica ... (C) 0.03
(Product name: FLAMENCO SUPERPEARL,
(Made by Engel Hard, average particle size 25μm)
(4) Titanium oxide film glass flakes (C) 0.01
(Product name: Metashine MC-1080, manufactured by Nippon Sheet Glass Co., Ltd., average particle size of 80 μm)
(5) Polyoxyethylene almond oil (D) 0.1
(Brand name: Kurobol A-70, manufactured by Coda Japan)
(6) Polyoxyethylene sorbitan monooleate 0.5
(7) Diethylaminohydroxybenzoyl hexyl benzoate 0.01
(8) Raspberry extract 0.1
(9) Red No. 227 0.05
(10) Fragrance 2.0
(11) Ethanol 50.0
(12) Balance of purified water

(Production method) Component (1) is added to a part of the component (12) with stirring, dissolved and dispersed, and then the component (2) dissolved in the remainder of the component (12) is gradually added with stirring. Then, the mixture of (5) to (7), (10) and (11) and (8), (9), (3) and (4) were added thereto to obtain fragrant water. In this case, the molar ratio (A) / (B) of the aluminum ion of the component (A) and the sodium ion of the component (B) is 1.0.

The perfumes used in Examples 12 to 14 of the present invention are shown in Table 2 below.

  According to the present invention, the powder layer containing the glittering powder has a beautiful appearance in which the two layers are clearly separated, and when the shake is used, the two layers can be easily mixed to disperse the glittering powder uniformly. It is possible to provide a two-layer type cosmetic that can form a mist and can be uniformly applied to a wide area. Furthermore, it is excellent in moisture feeling on the skin, has high adhesion of glittering powder, and has excellent storage stability. It can be used as a mist when used, so it can be applied to various cosmetics. Is possible.

Claims (6)

The following components (A) to (D) are contained, and the molar ratio (A) / (B) of the aluminum ion of the component (A) and the alkali metal ion of the component (B) is 0.8 to 2.0. A two-layer cosmetic characterized by
(A) Water-soluble aluminum salt (B) Alkali metal salt (C) Plate-like glittering powder having an average particle size of 20 to 100 μm 0.01 to 1% by mass
(D) Solid or pasty polyoxyethylene-added vegetable oil at 25 ° C., with 60 to 140 units of ethylene oxide added to one molecule of vegetable oil (A) two-layer cosmetic composition according to claim 1, the content of the water-soluble aluminum salt and 0.05 to 3 wt%. The two-layer cosmetic according to claim 1 or 2, wherein the component (C) is a glass flake coated with a metal or a metal oxide. The two-layer cosmetic according to any one of claims 1 to 3, wherein the component (D) is polyoxyethylene jojoba oil. A two-layer type cosmetic, wherein the two-layer type cosmetic according to any one of claims 1 to 4 is filled in a spray-type dispenser container. The two-layer cosmetic according to claim 5 , which is a spray dispenser container having a tip diameter of 0.2 to 0.6 mm.