JP2019081739A - Cosmetic and method for producing the same - Google Patents

Abstract

To give excellent sense of use to a cosmetic containing a fluid gel.SOLUTION: There is provided a method for producing a cosmetic which comprises: a step of heating and dissolving a gelatinizing agent and a gelatinizing accelerator in an aqueous solvent, followed by cooling to form a gel; a step of pulverizing the gel with two or more different pulverization conditions to obtain two or more fluid gels having different average particle diameters; and a mixing step of mixing the two or more fluid gels having different average particle diameters. The method may comprise a step of adding and mixing an oily substance with the fluid gels to form a dispersed oil phase.SELECTED DRAWING: None

Description

  The present invention relates to a cosmetic using a fluid gel and a method for producing the same.

  A flowable gel is prepared by applying shear force to a disintegrating gel formed by cooling warmly dissolved gellan gum, agar or the like to break the gel. The fluid gel thus produced has a uniform and smooth fine gel dispersion structure, has good usability, has salt resistance, and can be used for pigments and emulsion systems. A cosmetic using this fluid gel is proposed in Patent Document 1.

  However, since a homomixer, a disper, a paddle, etc. are used for preparation of the cosmetics described in patent document 1, there exists a tendency for the particle size of gel to become uniform. A gel with uniform particle size tends to have a refreshing feeling of use, and it is difficult to impart a rich feeling of use simply by simply breaking it with a machine such as a homomixer.

JP 2000-119166 A

  In view of the above situation, an object of the present invention is to provide a cosmetic that can impart excellent use feeling to a cosmetic containing a fluid gel, and a method for producing the same.

  The embodiment of the present invention has been made to solve the above problems, and relates to a cosmetic and a method of producing the cosmetic having the following aspects:

(1) forming a gel by heating and dissolving a gelling agent and a gelation promoter in an aqueous solvent and cooling it;
Crushing the gel respectively using two or more different crushing conditions to obtain two or more kinds of flowable gels having different average particle sizes;
Mixing two or more types of flowable gels having different average particle sizes;
A method of making a cosmetic, including:
(2) The method for producing a cosmetic according to (1), wherein the gel is immersed in an aqueous solvent before crushing the gel, and the gel is crushed in a state of being immersed in the aqueous solvent.
(3) The method for producing a cosmetic according to (1) or (2), wherein a polymer substance is further added to the aqueous solvent.
(4) Any one of (1) to (3), wherein the average particle diameter of the fluid gel having the largest average particle diameter is 100 μm or more among the two or more types of fluid gels having different average particle diameters. The manufacturing method of the cosmetics as described in.
(5) Of the two or more types of flowable gels having different average particle sizes, any one of (1) to (4), wherein the average particle size of the flowable gel having the smallest average particle size is less than 100 μm. The manufacturing method of the cosmetics as described in.
(6) The manufacturing method of the cosmetics of any one of (1)-(5) which further includes forming the dispersed oil phase by adding and mixing an oily substance to the said fluid gel.
(7) The viscosity difference between the oil phase at 25 ° C. and the flowable gel is 2000 mPa · s or less, and the difference in specific gravity between the oil phase at 25 ° C. and the flowable gel is 0.050 or less The manufacturing method of the cosmetics as described in (6).

(8) A cosmetic comprising a fluid gel formed by crushing a gel containing a gelling agent, a gelation accelerator and an aqueous solvent, and mixing two or more types of the fluid gels having different average particle diameters. .
(9) The cosmetic according to (8), wherein the fluid gel comprises an aqueous solvent phase comprising an aqueous solvent, together with a gel phase comprising a crushed product of the gel.
(10) The cosmetic according to (8) or (9), wherein the average particle size of the flowable gel having the largest average particle size is 100 μm or more among the two or more types of flowable gels having different average particle sizes. .
(11) Of the two or more types of flowable gels having different average particle sizes, any one of the items (8) to (10), wherein the average particle size of the flowable gel having the smallest average particle size is less than 100 μm. Cosmetics described in.
(12) The fluid gel as a matrix phase and an oil phase in which a liquid oily substance is dispersed as a dispersed phase in the fluid gel, according to any one of (8) to (11). Cosmetics.
(13) The cosmetic according to (12), wherein the average diameter of the oil phase is 0.1 mm to 2 mm.

  According to this embodiment, it is possible to provide a cosmetic with a rich feeling of use.

  Hereinafter, embodiments of the present invention will be described.

(A) Gelling Agent The gelling agent used in the present embodiment includes a water-soluble compound having a gelling ability that can form a disintegrable gel by dissolving in an aqueous solvent and cooling. Specific examples of the gelling agent include, for example, agar, gellan gum, carrageenan, pectin, gelatin, alginic acid, alginate and the like, and any one or more of them can be selected and used.

  The content of the gelling agent is not particularly limited, and may be, for example, 0.01% by mass to 1% by mass, more preferably 0 based on the content with respect to the flowable gel (that is, 100% by mass of the flowable gel). It is .02 mass%-0.5 mass%.

(B) Gelling Promoter The gelation promoter used in the present embodiment is an agent that promotes gelation by a gelling agent, and specifically, salts can be used. Examples of types of salts include monovalent salts (eg, sodium salt, potassium salt and the like), divalent salts (eg, calcium salt, magnesium salt, copper salt and the like), and the like. Salts preferred as the gelation promoter are polyvalent metal salts having a valence of 2 or more, and more preferable salts are calcium salts.

  As a calcium salt as a gelation promoter, for example, calcium lactate, calcium chloride, calcium carbonate, calcium citrate, calcium acetate, calcium phosphate, calcium pyrophosphate, calcium sulfate, calcium silicate, calcium oxide, calcium hydroxide, calcined calcium And calcium ascorbate, calcium gluconate, calcium glutamate and the like, and one or more of these can be selected and used. Preferred calcium salts are calcium lactate and / or calcium chloride.

  The content of the gelation accelerator is not particularly limited. For example, when a salt is used as the gelation accelerator, the content relative to the flowable gel may be 0.01% by mass to 5% by mass, more preferably 0.02 It is mass%-3 mass%.

(C) Polymeric Substance In the present embodiment, a polymeric substance may be used to adjust the hardness of the gel or to impart viscosity. The gelling agent and the gelation promoter are dissolved by heating in an aqueous solvent, and upon cooling, a gel is formed. However, the gel so formed has the characteristic that it hardens hard and it becomes difficult to break up the gel when applied to the skin. Therefore, in order to improve usability and stability, a polymer substance that adjusts gel hardness may be blended. As the polymer substance, a hydrophilic polymer compound having no gelling ability can be used. By blending such a polymer substance, the gel becomes soft, there is no stability failure such as syneresis even in the case of low viscosity, there is salt resistance, there is no abrupt viscosity change due to pH, and the surface condition after use The uniformity at the time of application is good, and a gel suitable for applying to cosmetics can be obtained.

  Thus, when added to an aqueous solvent as a component of the gel itself, the polymer substance plays a role in adjusting the gel hardness. On the other hand, the polymer substance may be added to the aqueous solvent in which the formed gel is immersed, in which case it plays a role of imparting viscosity to the aqueous solvent phase constituting the fluid gel together with the gel phase.

  Specific examples of the polymer substance include, for example, galactomannan (eg, guar gum, locust bean gum, cod gum etc.), xanthan gum, tamarind seed gum, tragacanth gum, karaya gum, pullulan, pylium seed gum, glucomannan, chitin, chitosan, starch, Examples thereof include polysaccharides such as dextrin, and cellulose derivatives such as carboxymethylcellulose, carboxymethylcellulose sodium, carboxymethylcellulose calcium and the like, and one or more of them can be selected and used. The preferred macromolecular substance is at least one selected from the group consisting of carboxymethylcellulose, sodium carboxymethylcellulose, calcium carboxymethylcellulose, xanthan gum, locust bean gum and guar gum.

  The content of the polymer substance is not particularly limited, but when the amount of the polymer substance is too large, it becomes difficult to form a gel, and when it is too small, stability failure such as separation of water tends to occur. Therefore, the content of the above-mentioned polymer substance may be 0.01% by mass to 5% by mass, or 0.02% by mass to 3% by mass as a content to the fluid gel.

(D) Aqueous solvent In the present embodiment, the aqueous solvent is at least one selected from the group consisting of water and a water-miscible organic solvent, and for example, is selected from the group consisting of water, lower alcohol, and polyhydric alcohol At least one type of The preferred carbon number of the lower alcohol is 7 or less, more preferably 3 or less. The preferred carbon number of the polyhydric alcohol is 8 or less, more preferably 6 or less.

  Examples of lower alcohols having 7 or less carbon atoms include ethanol and propanol. Examples of polyhydric alcohols having 8 or less carbon atoms include glycerin, diglycerin, glycols (for example, butylene glycol) and the like.

  The aqueous solvent is preferably water alone or a mixture of water and a water-miscible organic solvent, and in particular, preferably 50% by mass or more of the aqueous solvent is water, more preferably aqueous 70% by mass or more of the solvent is water.

  The content of the aqueous solvent is not particularly limited, and may be, for example, 90 to 99.96% by mass, or 95 to 99.9% by mass as the content relative to the flowable gel.

(E) Other Components Contained in Flowable Gel The flowable gel may contain various materials used in cosmetics. For example, various materials used in cosmetics may be added to the aqueous solvent together with the above-mentioned gelling agent, gelation accelerator and polymer substance, if necessary. Specifically, active ingredients, moisturizers, thickeners, preservatives, astringents, pH adjusters, ultraviolet light absorbers, ultraviolet light scatterers, brighteners as various components to be formulated in quasi-drugs, cosmetics, etc. Dyes, perfumes, insoluble solids and the like can be appropriately blended as required.

(F) Oily substance In the present embodiment, an oily substance may be used as a component to be added to a cosmetic including a fluid gel. As an oily substance, for example, avocado oil, almond oil, olive oil, cocoa oil, sesame oil, safflower oil, soybean oil, camellia oil, persimic oil, castor oil, grape seed oil, macadamia oil, mink oil, cotton seed oil, cotton wax, coconut oil Fats and oils such as egg yolk oil, palm oil, palm kernel oil, glyceryl triisooctanoate and cholesterol fatty acid ester; Hydrocarbons such as liquid paraffin and squalane; Higher alcohols such as isostearyl alcohol, oleyl alcohol and octyl dodecanol Hexyldecyl isostearate, diisopropyl adipate, di-2-ethylhexyl sebacate, diisostearyl malate, ethylene glycol di-2-ethylhexanoate, neopentyl glycol dicaprate, di-2-heptylundecanoic acid Synthetic ester oils such as Glycerin, Glycerin tri-2-ethylhexanoate, trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane triisostearate, pentaneerythritol tetra-2-ethylhexanoate, glycerin fatty acid ester, etc .; Silicone oils such as cyclic polysiloxanes such as dimethylpolysiloxane, methylphenylpolysiloxane, diphenylpolysiloxane, methylpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexanesiloxane, etc. isostearin And higher fatty acids such as acid and oleic acid. One or more of the above can be selected and used. The origin or structure is not particularly limited, and can be appropriately selected according to the application.

  In one preferred embodiment, at least one selected from the group consisting of silicone oil, glycerin fatty acid ester and liquid paraffin may be used as the oily substance. For more details of silicone oils, linear polysiloxanes may be used, and furthermore, methylpolysiloxanes and / or methylphenylpolysiloxanes may be used.

  The addition amount of the oily substance is not particularly limited, and may be 0.5 to 50% by mass, 1 to 20% by mass, or 2 to 10% by mass with respect to the total mass of the cosmetic. An oily substance having a high specific gravity and an oily substance having a low specific gravity can be mixed to produce an oil phase having a desired specific gravity. Also, an oily substance having a low viscosity and an oily substance having a high viscosity can be mixed to prepare an oil phase having a desired viscosity.

  When the oily substance is added to the cosmetic as described above, the amount of the fluid gel relative to the total mass of the cosmetic is not particularly limited, and may be, for example, 50 to 99.5% by mass, 80 to 99% by mass It may be 90 to 98% by mass.

(G) Preparation of Cosmetics The method for producing a cosmetic according to the present embodiment includes the following steps.
(Step 1) A step of forming a gel by heating and dissolving a gelling agent and a gelation promoter in an aqueous solvent and cooling it,
(Step 2) a step of respectively breaking the gel using two or more kinds of different crushing conditions to obtain two or more kinds of flowable gels having different average particle diameters;
(Step 3) A step of mixing two or more types of flowable gels having different average particle sizes.

  In step 1, a liquid obtained by adding and mixing a gelling agent, a gelation accelerator, and, if necessary, a polymer substance and other components to an aqueous solvent is heated to a temperature above the dissolution temperature of the gelling agent. The gelling agent is dissolved to obtain an aqueous solution. Thereafter, the resulting aqueous solution is gelled (solidified) by cooling to a temperature below the gelation point, and a gel is formed.

  In step 2, the gel formed above is crushed using, for example, a crusher such as a homomixer. As a result, a fluid gel which is an assembly of fine gels (microgels) is obtained. Here, when the polymer substance is blended, the hardness of the gel is soft as compared with the case where the polymer substance is not blended. Therefore, when the polymer substance is blended, a smoother feeling in use can be obtained as compared with the case where the polymer substance is not blended. In addition, it does not specifically limit as a homomixer, For example, the becomics made by Berenz company etc. can be used.

  In step 2, each gel is crushed using two or more different crushing conditions. For example, the particle size of the gel can be controlled by adjusting the stirring strength and the stirring time of the homomixer. Therefore, two or more types of fluid gels having different average particle sizes depending on the crushing conditions can be obtained while the same gel is crushed.

  For example, when the stirring intensity of the homomixer is weakened and the stirring time is shortened, a fluid gel having a large particle size of the gel and a uniform particle size distribution can be obtained. When the particle size of the gel is large, a thick feeling of use can be imparted. In addition, when the stirring intensity of the homomixer is increased and the stirring time is increased, a fluid gel having a small particle size of the gel and a uniform particle size distribution can be obtained. When the particle size of the gel is small, a refreshing feeling of use can be imparted. In the present embodiment, basically, the fluid gel having different average particle diameters is obtained by crushing the same gel using different crushing conditions, but it is necessarily limited to crushing the same gel. Instead, different gels of different composition may be crushed under different crushing conditions.

  In step 3, two or more types of flowable gels having different average particle sizes obtained in this manner are mixed. By mixing a fluid gel having a large particle size of the gel and a fluid gel having a small particle size of the gel, it has the characteristics of both gels, and while feeling the thickness of the gel, it has a refreshing feeling of use It can be granted. In this case, the mixing ratio may be appropriately adjusted in order to give a feeling of preference. Here, the mixing is preferably performed under the condition that the fluid gel is not broken. In order to mix a plurality of fluid gels having different average particle sizes, the fluid gel after mixing usually has a plurality of peaks in the particle size distribution.

  Moreover, the difference in the size of the average particle size also affects the feeling in use. When it is desired to impart a thick feeling in use, the average particle diameter of the flowable gel having the largest average particle diameter among the flowable gels to be mixed is preferably 100 μm or more, and more preferably 200 μm or more. The upper limit is not particularly limited, but may be 1000 μm or less or 500 μm or less.

  When it is desired to impart a refreshing feeling of use, the average particle diameter of the fluid gel having the smallest average particle diameter among the fluid gels to be mixed is preferably less than 100 μm, and more preferably less than 50 μm. The lower limit is not particularly limited, but may be 10 μm or more.

  In addition, the present invention is not limited to mixing two types of gel having a large particle size and a small particle size, and a gel having an intermediate particle size between the largest particle size gel and the smallest particle size gel is prepared. More than one type of gel may be mixed. Also in this case, the mixing ratio may be appropriately adjusted in order to give a desired feeling of use.

  In the cosmetic according to the first embodiment, the flowable gel comprises only a crushed product of a gel containing a gelling agent, a gelation promoter and an aqueous solvent, and in addition to the crushed product of gel, an aqueous solvent comprising an aqueous solvent It may not have a solvent phase. In the first embodiment, it is preferable that the gel contains a polymer substance, that is, by containing the polymer substance in the aqueous solvent constituting the gel, the hardness of the gel is adjusted to be soft. Is preferred.

  In the cosmetic according to the second embodiment, the flowable gel is an aqueous solvent phase (also referred to as an aqueous phase) composed of an aqueous solvent together with a gel phase composed of a crushed product of a gel containing a gelling agent, a gelation accelerator and an aqueous solvent. ) May be included. In the flowable gel according to the second embodiment, a hard gel is formed by, for example, increasing the concentration of the gelling agent and the gelation accelerator, and the gel is immersed in an aqueous solvent to which a polymer substance and other components are added. Thereafter, it can be produced by crushing with a homomixer. In the second embodiment, compared to the first embodiment, the feel of the gel becomes clearer, and the freshness derived from the aqueous solvent can be further imparted. In particular, by increasing the amount of the gelling agent and the gelation promoter to be added to make the gel firmer, the feel of the gel can be made clearer. In the second embodiment, the aqueous solvent phase can be made viscous by including a polymer substance in the aqueous solvent phase.

  Specifically, in the second embodiment, as an example, a gel is formed without adding a polymer substance to an aqueous solvent. Separately, an aqueous solvent to which a polymer substance and other components are added is prepared as a solution for dipping the gel. Before breaking the gel, the gel is dipped in an aqueous solvent, and the gel is broken while immersed in the aqueous solvent. Crushing can be performed under two or more different crushing conditions using, for example, a homomixer as described above, and since two or more kinds of fluid gels having different average particle diameters are produced, these are mixed. Thus, the flowable gel according to the second embodiment can be obtained. Although the gel may be crushed and then mixed with the aqueous solvent, it is preferable to immerse the gel in the aqueous solvent and then to break it, because it is easy to uniformly break the gel.

  In the fluid gel according to the second embodiment, the ratio of the gel phase to the aqueous solvent phase is not particularly limited. For example, the mass ratio of gel phase / aqueous solvent phase may be 10/90 to 60/40, or 10 / 90 to 50/50, or 20/80 to 40/60.

  The viscosity of the flowable gel according to this embodiment (the viscosity of the flowable gel formed by mixing two or more types of flowable gels different in average particle diameter) is not particularly limited, and 100 mPa · s to 10000 mPa · s at 25 ° C. It may be s, may be 150 mPa · s to 5000 mPa · s, and may be 200 mPa · s to 3000 mPa · s. In the present specification, the measurement of viscosity is performed according to the viscosity measurement method described in the quasi-drug raw material standard 2006 (hereinafter referred to as "outside original standard") general test method.

  The specific gravity at 25 ° C. of the flowable gel according to this embodiment (specific gravity of the flowable gel formed by mixing two or more types of flowable gels different in average particle diameter) is not particularly limited, and 0.92 to 1.20. It may be 070 or 0.970 to 1.020. In the present specification, the specific gravity is the ratio of density to water at 25 ° C., and the measurement thereof is carried out in accordance with the specific gravity and density measurement method described in the Outer Standard General Test Method.

(H) Formation of Oil Phase An oil phase dispersed in a fluid gel is formed by adding an oily substance to the fluid gel and mixing. Therefore, the cosmetic according to one embodiment includes an oil-in-water dispersed cosmetic comprising a fluid gel as a matrix phase (continuous phase) and an oil phase in which a liquid oily substance is dispersed as a dispersed phase in the fluid gel. It is. Thus, since the oil phase is dispersed in the fluid gel, the oil phase can be stably dispersed in the fluid gel having particle sizes of various sizes without forming a film. Further, by adjusting the difference between specific gravity and viscosity between the flowable gel and the oil phase to be small, the width of usable oily substances can be expanded and dispersed stably.

  In order to maintain the dispersed state of the oil phase, it is preferable to reduce the difference in specific gravity and viscosity between the flowable gel and the oil phase. This makes it easy to stably form an oil phase in the form of oil droplets in the flowable gel, and the effect of maintaining the dispersed state can be enhanced.

  From such a viewpoint, the oil phase preferably has a small viscosity difference with the fluid gel, and specifically, the viscosity difference (absolute value of difference) between the oil phase and the fluid gel at 25 ° C. is 2000 mPa · s. It is preferable that it is the following, More preferably, it is 1000 mPa * s or less. The viscosity of the oil phase may be higher or lower than the viscosity of the fluid gel.

  Moreover, in order to maintain the dispersed state stably, the difference in specific gravity (absolute value of difference) between the oil phase and the fluid gel at 25 ° C. is preferably 0.050 or less, more preferably 0.030 or less . The specific gravity of the oil phase may also be higher or lower than the specific gravity of the flowable gel.

  The type and amount of the oily substance may be selected to adjust the viscosity of the oil phase so as to obtain such a difference in viscosity and specific gravity.

  As described above, the cosmetic according to the embodiment can be obtained by uniformly dispersing the oil phase in the flowable gel. The viscosity of the cosmetic is not particularly limited, and is preferably 100 mPa · s to 10000 mPa · s at 25 ° C., more preferably 150 mPa · s to 5000 mPa · s, and further preferably 200 mPa · s to 3000 mPa · s. May be. Also, the specific gravity of the cosmetic is not particularly limited, and for example, at 25 ° C., it is preferably 0.920 to 1.070, more preferably 0.970 to 1.020.

  The average diameter of the oil phase present in the cosmetic is preferably 0.1 mm to 2 mm, more preferably 0.2 mm to 1.5 mm. The size of the oil phase can be adjusted by the speed and time of agitation. When the average diameter of the oil phase is 2 mm or less, coalescence of the oil phase can be suppressed and the stability of the oil phase can be maintained. In addition, when the average diameter of the oil phase is 0.1 mm or more, dissolution of the oil phase in the fluid gel can be suppressed.

  Thus, in the cosmetic according to the embodiment in which the oil phase is formed in the flowable gel, preferably, oil droplets having an average diameter of 0.1 mm to 2 mm are stably stabilized in a mixture of flowable gels having different average particle sizes. Since it can be dispersed, it is possible to impart an oily feel while being non-emulsified, and to realize a new feeling of use.

(I) Cosmetics In addition to the flowable gel, an oily substance may be added to the cosmetic as described above, and various materials used in the cosmetic may be added as needed. For example, active ingredients, moisturizers, thickeners, preservatives, astringents, pH adjusters, UV absorbers, UV scatterers, brighteners, dyes, and the like, as various components to be formulated in quasi-drugs, cosmetics, etc. Perfumes, insoluble solids, etc. may be mentioned. As a humectant, ceramide (for example, human ceramide) etc. may be added. These materials may be added when mixing and adding an oily substance to a fluid gel, or may be previously added to the oily substance, or after the oily substance is added and mixed to form an oil phase You may add. Moreover, it is not restricted to what formed the oil phase in this way, and it is good also as cosmetics of only the fluid gel which has not formed the oil phase depending on a use.

  The cosmetic targeted by the present embodiment is a composition used by applying to skin, hair, oral cavity mucous membrane, etc. The purpose of use is not particularly limited, and can be used for various uses. For example, it can be used for quasi drugs or cosmetics. The pH of the cosmetic according to the present embodiment is not particularly limited, and can be used in a wide range of pH (for example, pH 2 to 12). In addition, at the time of application, the oil phase and the fluid gel can be combined to provide a cosmetic having both a solid feeling of gel and a refreshing feeling of use.

  Hereinafter, although an example is shown and explained more concretely, the present invention is not limited to these examples.

  The average particle diameter of the flowable gel, the average diameter of the oil phase, the stability of the oil phase in the flowable gel, and the method of measuring and evaluating the sensory evaluation are as follows.

(Average particle size of flowable gel)
The sample is put into a laser diffraction particle size distribution analyzer (Microtrac MT3000II: manufactured by Microtrac Bell) so that the DV value (Diffraction volume) is 0.1 to 0.6, and 10 at a flow rate of 32.5 mL / sec. After circulating for one second, measurement was performed in purified water under the conditions of measurement time of 20 seconds and measurement twice, and the average of the two D50 values was calculated. The above operation was performed three times, and the average was taken as the average particle size of the flowable gel.

(Average diameter of oil phase)
The mean diameter of the oil phase was measured by light microscopy. Specifically, the oil phase was observed using an optical microscope, the diameter of the oil phase appearing in the image was measured, and the average value was calculated to be the average diameter.

(Stability of oil phase in fluid gel)
The prepared cosmetic was allowed to stand at 50 ° C. for one week, and the dispersibility of the oil phase was visually evaluated. The stability evaluation is evaluated in three stages and is as follows.
○: The oil phase is dispersed and there is no separation.
Δ: The oil phase is somewhat coagulated but there is no separation.
X: The oil phase is aggregated and separated.

(Feeling of use: sensory evaluation)
The cosmetic evaluations of each example and comparative example were actually used, and the following sensory evaluation was conducted by three panelists on the presence or absence of the massive feeling, the feeling of collapse of the gel, the familiarity with the skin, smoothness, and freshness at that time. The point is taken as the comprehensive evaluation.
・ Evaluation criteria <heavy feeling>
5 points: very heavy feeling 4 points: heavy feeling 3 points: normal 2 points: little heavy feeling 1 point: no heavy feeling <gel feeling of collapse>
5 points: The feeling of gel collapse is very high 4 points: The feeling of gel collapse 3 points: Normal 2 points: Less feeling of gel collapse 1 point: no feeling of gel collapse <skin familiarity>
5 points: very good skin familiarity 4 points: good skin familiarity 3 points: normal 2 points: skin familiarity is not good 1 point: skin familiarity is not very good <smoothness>
5 points: very smooth 4 points: smooth 3 points: normal 2 points: low smoothness 1 point: very low smoothness <water>
5 points: very watery 4 points: watery 3 points: normal 2 points: little water 1 point: very little water

[Examples 1 to 9, Comparative Examples 1 and 2]
A flowable gel was prepared according to the formulation in Table 1 below. Specifically, in Examples 1 to 5, 0.1 parts by mass of gellan gum, 0.04 parts by mass of calcium chloride, 0.05 parts by mass of xanthan gum, 8 parts by mass of glycerin, 2 parts by mass of butylene glycol (BG), and water 89 .81 parts by mass were dissolved by heating at 85 ° C, and then cooled to room temperature to prepare a gel. Next, the prepared gel was crushed with a homomixer. Crushing was performed under three conditions shown in Table 1 (particle diameter: 3 conditions of large, medium and small), and 3 types (average particle diameter: large, medium and small) of flowable gels having different average particle diameters were prepared. The average particle size, viscosity and specific gravity of each fluid gel are as shown in Table 1. By mixing the flowable gels having the respective average particle diameters at the mixing ratio shown in the mixing ratio of Table 1, the flowable gels of Examples 1 to 5 were obtained.

  Examples 6 to 9 are examples in which the flowable gel was prepared in the same manner as in Example 1 except that the formulation of the flowable gel was changed as shown in Table 1. Comparative Example 1 is an example of the use of the flowable gel alone having a large average particle size among the flowable gels prepared in the same manner as Examples 1 to 5, and Comparative Example 2 is a flowability having a small average particle size It is an example of gel single use.

The details of the blend components in Table 1 are as follows.
-Gellan gum: Kelcogel / DSP Gokyo Food & Chemical Co., Ltd.-Agar: Ina canten CS-310 / Ina Food Industry Co., Ltd.-Carrageenan: Carrageenan CS-3 / Ina Food Industry Co., Ltd.-Xanthan gum: Nom coat ZZ / day Qing Oillio Group Co., Ltd. Locust bean gum: Locust bean gum CS / Ina Food Industry Co., Ltd. Carboxymethylcellulose sodium: CMC Daicel 1350 / Daicel Fine Chem Co., Ltd.

  Sensory evaluation of the feeling of use was performed about Examples 1-9 and Comparative Examples 1 and 2. The results are as shown in Table 2. Although the comparative example 1 was excellent in evaluation of a solid feeling and the collapse feeling of gel, evaluation of smoothness and freshness was inferior. On the other hand, Comparative Example 2 was excellent in the evaluation of smoothness and freshness, but was inferior in the evaluation of the solid feeling and the collapse feeling of the gel.

  Among the examples, Example 5 was the best in overall evaluation, and Example 4 was the next best. This is because of the mixing of the flowable gel having a large average particle diameter, the flowable gel having a small average particle diameter, and the flowable gel having an average particle diameter in the middle, so that the feel of the gel is felt gradually As a result, the overall evaluation is considered to be excellent. Moreover, the comprehensive evaluation result of Examples 1-3 and Examples 6-9 was superior to Comparative Example 1 and Comparative Example 2. It is considered that, by mixing the flowable gels having different average particle sizes, the insufficient feeling of each of Comparative Example 1 and Comparative Example 2 is compensated, and the comprehensive evaluation is enhanced.

[Examples 10 to 18, Comparative Examples 3 and 4]
A flowable gel was prepared according to the formulation in Table 3 below. Specifically, in Examples 10 to 14, 0.1 parts by mass of gellan gum, 0.04 parts by mass of calcium chloride, and 30 parts by mass of water were dissolved by heating at 85 ° C., and then cooled to room temperature to prepare a gel phase. . Separately, an aqueous phase obtained by mixing 0.05 parts by mass of xanthan gum, 8 parts by mass of glycerin, 2 parts by mass of BG and 59.81 parts by mass of water was dissolved by heating at 85 ° C., and then cooled to room temperature. After soaking the gel phase in the aqueous phase, it was crushed with a homomixer. The pulverization was carried out under three conditions shown in Table 3 (particle diameter: 3 conditions of large, medium and small) to prepare 3 types of flowable gels having different average particle diameters (average particle size: large, medium and small). The average particle size, viscosity and specific gravity of each flowable gel are as shown in Table 3. The flowable gels having the respective average particle diameters were mixed at the mixing ratio shown in the mixing ratio of Table 3 to obtain flowable gels of Examples 10 to 14. The details of the ingredients in Table 3 are the same as those in Table 1.

  Examples 15 to 18 are examples in which the formulation of the flowable gel was changed as shown in Table 3, and the others were the same as in Example 10 to produce a flowable gel. Comparative Example 3 is an example of the use of the flowable gel alone having a large average particle diameter among the flowable gels prepared in the same manner as in Examples 10 to 14, and Comparative Example 4 is a flowability having a small average particle diameter. It is an example of gel single use.

  The sensory evaluation of the feeling of use was performed for Examples 10 to 18 and Comparative Examples 3 and 4. The results are as shown in Table 4. Although the comparative example 3 was excellent in evaluation of a solid feeling and the collapse feeling of a gel, evaluation of smoothness and freshness was inferior. On the other hand, Comparative Example 4 was excellent in the evaluation of smoothness and freshness, but was inferior in the evaluation of the solid feeling and the feeling of collapse of the gel.

  Among the examples, Example 14 was the best in the comprehensive evaluation, and Example 13 was the next best. This is because of the mixing of the flowable gel having a large average particle diameter, the flowable gel having a small average particle diameter, and the flowable gel having an average particle diameter in the middle, so that the feel of the gel is felt gradually As a result, the overall evaluation is considered to be excellent. Moreover, the comprehensive evaluation result of Examples 10-12 and Examples 15-18 was superior to Comparative Example 3 and Comparative Example 4. It is considered that, by mixing the flowable gels having different average particle sizes, the insufficient feeling of each of Comparative Example 3 and Comparative Example 4 is compensated, and the comprehensive evaluation is enhanced.

  Moreover, when Table 2 and Table 4 are compared, Example 2 and Example 11, Example 3 and Example 12, Example 8 and 17, Example 9 and Example 18, Comparative Example 1 and Comparative Example 3 In Comparative Example 2 and Comparative Example 4, the comprehensive evaluation was better in the example of Table 4 and the comparative example. This result is considered to be the difference between the method of Table 1 in which the gel is simply crushed and the method of Table 3 in which the hard gel is immersed in the water phase and then crushed. In other words, since the firm gel is broken, the feel of the gel appears more clearly than in the case where the other gel is broken, so the results of the evaluation items of the solid feeling and the broken feeling of the gel are well It is thought that it became. In addition, the gel phase and the aqueous phase are prepared separately instead of simply crushing the gel, so that the feel of the aqueous phase can be more clearly displayed, and the result of the evaluation items of smoothness and freshness becomes better. It is thought that

[Examples 16 to 25]
The oily phase is mixed according to the formulation in Table 5 below, and the oil phase is dispersed in the flowable gel by adding and mixing this to the flowable gel of Example 1 or Example 10, 0.1 mm to 2 mm A cosmetic having oil droplets was produced. The mixing of the oil phase into the flowable gel was dispersed by hand stirring. In the case of Example 16, the amount of the oily substance was 10% by mass, and the amount of the flowable gel was 90% by mass. The specific gravity at 25 ° C. and the viscosity at 25 ° C. of the oil phase before addition to the flowable gel were measured to determine the difference in viscosity and specific gravity from the flowable gel of Example 1 or Example 10 Calculated. In addition, for the flowable gel in which the oil phase was dispersed, the stability and average diameter of the oil phase in the flowable gel were evaluated. Furthermore, the specific gravity and viscosity of the cosmetic at 25 ° C. were measured.

The details of the components in Table 5 are as follows.
・ Methylphenylpolysiloxane: KF-54 / Shin-Etsu Chemical Co., Ltd. ・ Methylpolysiloxane: KF96A-5CS / Shin-Etsu Chemical Co., Ltd. ・ Glycerin fatty acid ester: Sarakos HG-8 / Nisshin Oillio Group Co., Ltd. ・ Flow Paraffin: Liquid paraffin No. 70-S / Sanko Chemical Industry Co., Ltd. diphenyl dimethicone: KF-54 HV / Shin-Etsu Chemical Co., Ltd. lauryl polyglyceryl-3 polydimethylsiloxyethyl dimethicone: KF-6105 / Shin-Etsu Chemical Co., Ltd. Made

  The results are as shown in Table 5. The results of Examples 16 to 18 and Examples 20 to 22 were good because the oil phase was dispersed and there was no separation. On the other hand, the result of Example 23 is that the oil phase is aggregated slightly upward but there is no separation. The results of Example 19 and Example 25 show that the oil phase was aggregated upward and separated. The result of Example 24 is that the oil phase is coagulated downward and separated.

  Regarding the results of Examples 16 to 18 and Examples 20 to 22, when the difference in viscosity between the oil phase and the flowable gel is 2000 mPa · s or less and the difference in specific gravity is 0.050 or less, the results are good. Conceivable. About the result of Example 19, although the viscosity difference of an oil phase and a fluid gel is 2000 mPa * s or less, since a specific gravity difference exceeded 0.050, it is thought that the oil phase was aggregated downward and separated . On the other hand, regarding the result of Example 23, the viscosity difference between the oil phase and the fluid gel was 2000 mPa · s or less, and the specific gravity difference was larger than 0.050. When Example 23 and Example 19 are compared, the specific gravity is the same, but the viscosity difference is smaller in Example 23, so unlike the result of Example 19, the oil phase is upward although not to the extent of separation. It is thought that the result was that it was aggregated. With respect to the results of Example 24 and Example 25, since the viscosity difference between the oil phase and the fluid gel exceeded 2000 mPa · s and the specific gravity difference exceeded 0.050, the oil phase could not be maintained, and the oil phase It is thought that the result is that they have aggregated and separated.

  While certain embodiments have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope of the invention. These embodiments can be implemented in other various forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. These embodiments and their omissions, substitutions, changes, etc. are included in the invention described in the claims and the equivalents thereof as well as included in the scope and the gist of the invention.

Claims (13)

Forming a gel by heat-dissolving the gelling agent and the gelation promoter in an aqueous solvent and cooling it;
Crushing the gel respectively using two or more different crushing conditions to obtain two or more kinds of flowable gels having different average particle sizes;
Mixing two or more types of flowable gels having different average particle sizes;
A method of making a cosmetic, including:   The method for producing a cosmetic preparation according to claim 1, wherein the gel is immersed in an aqueous solvent before the gel is crushed, and the gel is crushed while immersed in the aqueous solvent.   The manufacturing method of the cosmetics of Claim 1 or 2 which further adds a polymeric substance to the said aqueous solvent.   The cosmetic according to any one of claims 1 to 3, wherein the average particle diameter of the fluid gel having the largest average particle diameter is 100 μm or more among the two or more types of fluid gels having different average particle diameters. Manufacturing method.   The cosmetic according to any one of claims 1 to 4, wherein the average particle diameter of the fluid gel having the smallest average particle diameter among the two or more types of fluid gels having different average particle diameters is less than 100 μm. Manufacturing method.   The method for producing a cosmetic according to any one of claims 1 to 5, further comprising forming a dispersed oil phase by adding and mixing an oily substance to the fluid gel.   The viscosity difference between the oil phase at 25 ° C. and the flowable gel is 2000 mPa · s or less, and the difference in specific gravity between the oil phase at 25 ° C. and the flowable gel is 0.050 or less. The manufacturing method of the cosmetics as described in.   A cosmetic comprising a fluid gel formed by crushing a gel containing a gelling agent, a gelation accelerator and an aqueous solvent, and mixing two or more types of the fluid gels having different average particle diameters.   The cosmetic according to claim 8, wherein the flowable gel comprises an aqueous solvent phase consisting of an aqueous solvent, together with a gel phase consisting of a crushed product of the gel.   The cosmetic according to claim 8 or 9, wherein the average particle diameter of the flowable gel having the largest average particle diameter among the two or more types of flowable gels having different average particle diameters is 100 μm or more.   The cosmetic according to any one of claims 8 to 10, wherein the average particle diameter of the fluid gel having the smallest average particle diameter is less than 100 μm among the two or more types of fluid gels having different average particle diameters. .   The cosmetic according to any one of claims 8 to 11, comprising the fluid gel as a matrix phase, and an oil phase in which a liquid oily substance is dispersed as a dispersed phase in the fluid gel.   The cosmetic according to claim 12, wherein an average diameter of the oil phase is 0.1 mm to 2 mm.