JP6924483B2 - Cosmetics and their manufacturing methods - Google Patents

Description

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

A fluid gel is produced by breaking a gel by applying a shearing force to a disintegrating gel formed by cooling a gellan gum or agar that has been heated and dissolved. The fluidized gel thus produced has a uniform and smooth fine gel dispersion structure, is easy to use, has salt resistance, and can be used for pigments and emulsification systems. A cosmetic using this fluid gel has been proposed in Patent Document 1.

However, since a homomixer, a disper, a paddle, or the like is used for producing the cosmetics described in Patent Document 1, the particle size of the gel tends to be uniform. Gels with a uniform particle size tend to have a refreshing feel, and it is difficult to give a rich feel by simply breaking them with a machine such as a homomixer.

Japanese Unexamined Patent Publication No. 2000-119166

In view of the above circumstances, it is an object of the present invention to provide a cosmetic containing a fluidized gel, which can give an excellent feeling of use, and a method for producing the same.

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

(1) Forming a gel by heating and dissolving a gelling agent and a gelation accelerator in an aqueous solvent and cooling.
The gels are each crushed using two or more different crushing conditions to obtain two or more fluid gels having different average particle sizes, and
Mixing two or more types of fluid gels with different average particle sizes,
How to make cosmetics, including.
(2) immersing the gel prior to crushing the gel in a second aqueous solvent, crushing the gel in a state immersed in the second aqueous solvent, cosmetic method according to (1).
(3) The method for producing a cosmetic according to (1) or (2), wherein a polymer substance is further added to the aqueous solvent for forming the gel or the second aqueous solvent for immersing the gel.
(4) Any one of (1) to (3), wherein the fluid gel having the largest average particle diameter has an average particle diameter of 100 μm or more among the two or more types of fluid gels having different average particle diameters. The method for manufacturing cosmetics according to.
(5) Any one of (1) to (4), wherein the fluid gel having the smallest average particle diameter has an average particle diameter of less than 100 μm among the two or more types of fluid gels having different average particle diameters. The method for manufacturing cosmetics according to.
(6) The method for producing a cosmetic according to any one of (1) to (5), further comprising forming a dispersed oil phase by adding and mixing an oily substance to the fluidized gel.
(7) The viscosity difference between the oily substance and the fluidized gel at 25 ° C. is 2000 mPa · s or less, and the specific gravity difference between the oily substance and the fluidized gel at 25 ° C. is 0.050 or less. The method for producing a cosmetic according to (6).

(8) A fluid gel obtained by crushing a gel containing a gelling agent, a gelation accelerator, and an aqueous solvent, which is a mixture of two or more kinds of the above-mentioned fluid gels having different average particle sizes. ..
(9) The cosmetic according to (8), wherein the fluid gel contains an aqueous solvent phase composed of a second aqueous solvent together with a gel phase composed of a crushed product of the gel.
(10) The cosmetic according to (8) or (9), wherein the fluid gel having the largest average particle size has an average particle size of 100 μm or more among the two or more types of fluid gels having different average particle sizes. ..
(11) Any one of (8) to (10), wherein the fluid gel having the smallest average particle diameter has an average particle diameter of less than 100 μm among the two or more types of fluid gels having different average particle diameters. Cosmetics listed in.
(12) The item according to any one of (8) to (11), which comprises the fluidized gel as a matrix phase and an oily phase in which a liquid oily substance is dispersed as a dispersed phase in the fluidized gel. Cosmetics.
(13) The cosmetic according to (12), wherein the oil phase has an average diameter of 0.1 mm to 2 mm.

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

Embodiments of the present invention will be described below.

(A) Gelling agent Examples of the gelling agent used in the present embodiment include a water-soluble compound having a gelling ability capable of forming a disintegrating gel by dissolving in an aqueous solvent and cooling. Specific examples of the gelling agent include agar, gellan gum, carrageenan, pectin, gelatin, alginic acid, alginate, and the like, and any one or more of these 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, as the content with respect to the fluid gel (that is, the amount of the fluid gel is 100% by mass). It is 0.02% by mass to 0.5% by mass.

(B) Gelation Accelerator The gelation accelerator used in the present embodiment is an agent that promotes gelation by the gelling agent, and specifically, salts can be used. Examples of the types of salts include monovalent salts (for example, sodium salt, potassium salt, etc.) and divalent salts (for example, calcium salt, magnesium salt, copper salt, etc.). Preferred salts as a gelation accelerator are divalent or higher polyvalent metal salts, and more preferable salts are calcium salts.

Examples of the calcium salt as a gelation accelerator include calcium lactate, calcium chloride, calcium carbonate, calcium citrate, calcium acetate, calcium phosphate, calcium pyrophosphate, calcium sulfate, calcium silicate, calcium oxide, calcium hydroxide, and calcined calcium. , Calcium ascorbate, calcium gluconate, calcium glutamate and the like, and any 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, and for example, when salts are used as the gelation accelerator, the content with respect to the fluid gel may be 0.01% by mass to 5% by mass, more preferably 0.02. It is by mass% to 3% by mass.

(C) Polymer substance In the present embodiment, a polymer substance may be used in order to adjust the hardness of the gel and impart viscosity. A gel is formed by heating and dissolving the gelling agent and the gelation accelerator in an aqueous solvent and cooling the mixture. However, the gel thus formed has a characteristic of being hard and hardened, and it becomes difficult for the gel to break down when applied to the skin. Therefore, in order to improve usability and stability, a polymer substance that adjusts the 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 water separation even in the case of low viscosity, there is salt resistance, there is no sudden change in viscosity due to pH, and the surface condition after use. , The uniformity at the time of application is good, and a gel suitable for application to cosmetics can be obtained.

As described above, when the polymer substance is added to the aqueous solvent as a component constituting the gel itself, it plays a role of adjusting the gel hardness. On the other hand, a polymer substance may be added to the aqueous solvent for immersing the formed gel, and in that 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 high molecular weight substance include, for example, galactomannan (for example, guar gum, locust bean gum, tara gum, etc.), xanthan gum, tamarind seed gum, tragant gum, karaya gum, pullulan, psyllium seed gum, glucomannan, chitin, chitosan, starch, etc. Examples thereof include polysaccharides such as dextrin, cellulose derivatives such as carboxymethyl cellulose, sodium carboxymethyl cellulose, and calcium carboxymethyl cellulose, and any one or more of these can be selected and used. The preferred polymeric substance is at least one selected from the group consisting of carboxymethyl cellulose, sodium carboxymethyl cellulose, calcium carboxymethyl cellulose, xanthan gum, locust bean gum and guar gum.

The content of the polymer substance is not particularly limited, but if the amount of the polymer substance is too large, it becomes difficult for gel to be formed, and if it is too small, unstable stability such as water separation tends to occur. Therefore, the content of the polymer substance may be 0.01% by mass to 5% by mass or 0.02% by mass to 3% by mass as the content with respect 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 is selected from the group consisting of, for example, water, a lower alcohol, and a polyhydric alcohol. At least one of them can be mentioned. The lower alcohol has a preferable carbon number of 7 or less, more preferably 3 or less. The polyhydric alcohol preferably has 8 or less carbon atoms, more preferably 6 or less carbon atoms.

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

The aqueous solvent is preferably water alone or a mixed solution of water and a water-miscible organic solvent, and more specifically, 50% by mass or more of the aqueous solvent is preferably water, more preferably aqueous. More than 70% by mass of the solvent is water.

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

(E) Other components contained in the fluid gel The fluid 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, as various ingredients to be blended in quasi-drugs, cosmetics, etc., active ingredients, moisturizers, thickeners, preservatives, astringents, pH regulators, UV absorbers, UV scatterers, brighteners , Dyes, fragrances, insoluble solids and the like can be appropriately blended as needed.

(F) Oily substance In the present embodiment, an oily substance may be used as a component to be added to cosmetics containing a fluid gel. Examples of oily substances include avocado oil, almond oil, olive oil, cacao oil, sesame oil, saflower oil, soybean oil, camellia oil, persic oil, castor oil, grape seed oil, macadamia nut oil, minced oil, cottonseed oil, mokurou, and palm. Oils and fats such as oil, egg yolk oil, palm oil, palm kernel oil, glyceryl triisooctanoate, cholesterol fatty acid ester; hydrocarbons such as liquid paraffin and squalane; higher alcohols such as isostearyl alcohol, oleyl alcohol and octyldodecanol Hexyldecyl isostearate, diisopropyl adipate, di-2-ethylhexyl sevacinate, diisostearyl malate, ethylene glycol di-2-ethylhexaneate, neopentyl glycol dicaprate, glycerin di-2-heptylundecanoate, tri Synthetic ester oils such as glycerin -2-ethylhexaneate, trimethyl propane tri-2-ethylhexaneate, trimethylol propane triisostearate, pentane erythrite tetra-2-ethylhexane, glycerin fatty acid ester; dimethylpolysiloxane , Chain polysiloxanes such as methylphenylpolysiloxane, diphenylpolysiloxane, methylpolysiloxane, silicone oils such as cyclic polysiloxanes such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexanesiloxane; isostearic acid, olein Higher fatty acids such as acid and the like can be mentioned. One or more types can be selected and used from the above. The origin and structure are not particularly limited, and can be appropriately selected depending on the intended use.

In one preferred embodiment, as the oily substance, at least one selected from the group consisting of silicone oil, glycerin fatty acid ester and liquid paraffin may be used. Regarding the details of the silicone oil, a chain polysiloxane may be used, and further, methylpolysiloxane and / or methylphenylpolysiloxane may be used.

The amount of the oily substance added 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 heavy specific density and an oily substance having a light specific density can be mixed to prepare an oily substance having a desired specific density. Further, an oily substance having a low viscosity and an oily substance having a high viscosity can be mixed to prepare an oily substance having a desired viscosity.

When the oily substance is added to the cosmetic in this way, the amount of the fluidized gel with respect to the total mass of the cosmetic is not particularly limited, and may be, for example, 50 to 99.5% by mass, or 80 to 99% by mass. However, it may be 90 to 98% by mass.

(G) Preparation of Cosmetics The method for producing cosmetics 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 accelerator in an aqueous solvent and cooling the mixture.
(Step 2) A step of crushing each of the above gels using two or more different crushing conditions to obtain two or more types of fluid gels having different average particle sizes, and
(Step 3) A step of mixing two or more types of fluid gels having different average particle sizes.

In step 1, a liquid obtained by adding a gelling agent, a gelling accelerator, and if necessary, a polymer substance and other components to an aqueous solvent and mixing them is heated to a temperature equal to or higher than the dissolution temperature of the gelling agent. The gelling agent is dissolved to obtain an aqueous solution. Then, the obtained aqueous solution is cooled to a gel point or lower to gel (solidify), and a gel is formed.

In step 2, the gel formed above is crushed using a crusher such as a homomixer. As a result, a fluid gel which is an aggregate of fine gels (microgels) is obtained. Here, when the polymer substance is blended, the hardness of the gel is softer than that when the polymer substance is not blended. Therefore, when the polymer substance is blended, a smoother feeling of use can be obtained as compared with the case where the polymer substance is not blended. The homomixer is not particularly limited, and for example, Becomics manufactured by Berenz Co., Ltd. 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 intensity and 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 crushing the same gel.

For example, when the stirring intensity of the homomixer is weakened and the stirring time is shortened, a fluid gel having a large gel particle size and a uniform particle size distribution can be produced. When the particle size of the gel is large, a thick feeling of use can be imparted. Further, when the stirring strength of the homomixer is increased and the stirring time is lengthened, a fluid gel having a small particle size and a uniform particle size distribution can be produced. When the particle size of the gel is small, a refreshing feeling of use can be imparted. In this embodiment, basically, the same gel is crushed using different crushing conditions to obtain a fluid gel having a different average particle size, but the gel is not necessarily crushed. Gels having different compositions may be crushed under different crushing conditions.

In step 3, two or more types of fluid gels having different average particle sizes thus obtained are mixed. By mixing a fluid gel with a large particle size of the gel and a fluid gel with a small particle size of the gel, you can feel the thickness of the gel and feel the refreshing feeling of use, which has the characteristics of both gels. Can be granted. In this case, the mixing ratio may be appropriately adjusted in order to obtain a desired feeling of use. Here, the mixing is preferably carried out under conditions that do not crush the fluidized gel. Since a plurality of fluidized gels having different average particle sizes are mixed, the fluidized gel after mixing usually has a plurality of peaks in the particle size distribution.

In addition, the difference in the size of the average particle size also affects the usability. When it is desired to give a thick feeling of use, the average particle size of the fluidized gel having the largest average particle size among the mixed fluidized gels is preferably 100 μm or more, 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 give a refreshing feeling of use, the average particle size of the fluidized gel having the smallest average particle size is preferably less than 100 μm, more preferably less than 50 μm among the fluidized gels to be mixed. The lower limit is not particularly limited, but may be 10 μm or more.

Further, the gel is not limited to mixing two types of gel, that is, a gel having a large particle size and a gel having a small particle size, and a gel having a particle size intermediate between the gel having the largest particle size and the gel having the smallest particle size is prepared. More than one type of gel may be mixed. In this case as well, the mixing ratio may be appropriately adjusted in order to obtain a desired feeling of use.

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

In the cosmetic according to the second embodiment, the fluid 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 fluid gel according to the second embodiment, for example, a hard gel is formed by 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 or other components are added. After that, it can be produced by crushing with a homomixer. In the second embodiment, the feel of the gel becomes clearer and the freshness derived from the aqueous solvent can be imparted more than in the first embodiment. In particular, by increasing the amount of the gelling agent and the gelation accelerator to be added to make the gel harder, the feel of the gel can be made clearer. Further, in the second embodiment, the viscosity can be imparted to the aqueous solvent phase by including the 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 immersing the gel. Before crushing the gel, the gel is immersed in an aqueous solvent, and the gel is crushed in the state of being immersed in the aqueous solvent. As described above, crushing can be performed under two or more different crushing conditions using, for example, a homomixer, whereby two or more fluid gels having different average particle sizes are produced, and these are mixed. As a result, the fluid gel according to the second embodiment is obtained. The gel may be crushed and then mixed with an aqueous solvent, but it is preferable to immerse the gel in an aqueous solvent and then crush the gel because it is easy to uniformly crush 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, and for example, the gel phase / aqueous solvent phase may have a mass ratio of 10/90 to 60/40. It may be / 90 to 50/50, or 20/80 to 40/60.

The viscosity of the fluid gel according to the present embodiment (viscosity of the fluid gel formed by mixing two or more fluid gels having different average particle sizes) is not particularly limited, and is 100 mPa · s-10000 mPa · at 25 ° C. It may be s, 150 mPa · s to 5000 mPa · s, and further 200 mPa · s to 3000 mPa · s. In this specification, the viscosity is measured according to the viscosity measuring method described in the quasi-drug raw material standard 2006 (hereinafter referred to as “outer original rule”) general test method.

The specific gravity of the fluid gel according to the present embodiment at 25 ° C. (the specific density of the fluid gel obtained by mixing two or more types of fluid gels having different average particle sizes) is not particularly limited, and is 0.920 to 1. It may be 070 or 0.970 to 1.020. In the present specification, the specific gravity is the ratio of the density to water at 25 ° C., and the measurement is performed according to the specific gravity and the density measurement method described in the general test method of the outer regulations.

(H) Formation of oil phase By adding an oily substance to a fluidized gel and mixing it, an oily phase dispersed in the fluidized gel is formed. Therefore, the cosmetic according to the embodiment is an oil-in-water dispersion type cosmetic containing a fluidized 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 fluidized gel. Is. Since the oil phase is dispersed in the fluid gel in this way, the oil phase can be stably dispersed in the fluid gel having a particle size of various sizes without forming a film. Further, by adjusting so that the difference in specific gravity and viscosity between the fluid gel and the oil phase is small, the range of oily substances that can be used can be widened, and stable dispersion can be achieved.

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 fluidized gel and the oil phase (oil-based substance). As a result, it is easy to stably form an oil droplet-like oil phase in the fluidized gel, and the effect of maintaining the dispersed state can be enhanced.

From this point of view, it is preferable oily substance has a small viscosity difference between the flowable gel, specifically, a viscosity difference at 25 ° C. and the oily substance and the fluidity gel (absolute value of the difference) is 2000 mPa · s It is preferably less than or equal to, more preferably 1000 mPa · s or less. The viscosity of the oily substance may be higher or lower than the viscosity of the fluidized gel.

Further, in order to maintain a stable dispersed state, the difference in specific gravity (absolute value of the difference) between the oily substance and the fluidized gel at 25 ° C. is preferably 0.050 or less, more preferably 0.030 or less. .. The specific gravity of the oily substance may be higher or lower than the specific gravity of the fluidized gel.

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

By uniformly dispersing the oil phase in the fluid gel as described above, the cosmetic according to the embodiment can be obtained. 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 200 mPa · s to 3000 mPa · s. But it may be. The specific gravity of the cosmetic is not particularly limited, and is preferably 0.920 to 1.070, more preferably 0.970 to 1.020, for example, at 25 ° C.

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 stirring. When the average diameter of the oil phase is 2 mm or less, coalescence of the oil phases can be suppressed and the stability of the oil phase can be maintained. Further, when the average diameter of the oil phase is 0.1 mm or more, it is possible to prevent the oil phase from being dissolved in the fluid gel.

In the cosmetics according to the embodiment in which the oil phase is formed on the fluidized gel in this way, oil droplets having an average diameter of 0.1 mm to 2 mm are stably stably applied to a mixture of fluidized gels having different average particle sizes. Since it can be dispersed, it is possible to impart an oily feel while being non-emulsifying, and it is possible to realize a new feeling of use.

(I) Cosmetics The oily substance may be added to the cosmetics together with the fluid gel as described above, and various materials used in the cosmetics may be added as necessary. For example, as various ingredients to be blended in quasi-drugs, cosmetics, etc., active ingredients, moisturizers, thickeners, preservatives, astringents, pH adjusters, UV absorbers, UV scatterers, brighteners, pigments, etc. Examples include fragrances and insoluble solids. As the moisturizer, ceramide (for example, human ceramide) or the like may be added. These materials may be added when the oily substance is added to and mixed with the fluid gel, or may be added in advance in the oily substance, or after the oily substance is added and mixed to form an oil phase. It may be added. Further, the cosmetic is not limited to the one having an oil phase formed in this way, and depending on the application, it may be a cosmetic containing only a fluid gel without forming an oil phase.

The cosmetics targeted by the present embodiment refer to compositions used by being applied to the skin, hair, oral mucosa, etc., and the purpose of use is not particularly limited and can be used for various purposes. For example, it can be used for quasi-drugs or cosmetics. The pH of the cosmetic according to this embodiment is not particularly limited, and can be used in a wide range of pH (for example, pH 2 to 12). Further, at the time of application, the oil phase and the fluid gel are combined to provide a cosmetic having both a profound feeling of the gel and a refreshing feeling of use.

Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to these Examples.

The average particle size of the fluidized gel, the average diameter of the oil phase, the stability of the oil phase in the fluidized gel, and the measurement / evaluation method of the sensory evaluation are as follows.

(Average particle size of fluid gel)
The sample was put into a laser diffraction type particle size distribution meter (Microtrac MT3000II: manufactured by Microtrac Bell) so that the DV value (Diffraction volume) was 0.1 to 0.6, and 10 at a flow velocity of 32.5 mL / sec. After circulating for 2 seconds, the measurement was performed in purified water under the conditions of a measurement time of 20 seconds and two measurement times, and the average of the two D50 values was calculated. The above operation was performed three times, and the average thereof was taken as the average particle size of the fluidized gel.

(Average diameter of oil phase)
The average diameter of the oil phase was measured with an optical microscope. 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 obtain the average diameter.

(Stability of oil phase in fluid gel)
The prepared cosmetic was allowed to stand at 50 ° C. for 1 week, and then the dispersibility of the oil phase was visually evaluated. The stability evaluation is evaluated on a three-point scale and is as follows.
〇: The oil phase is dispersed and there is no separation.
Δ: The oil phase is slightly agglomerated, but there is no separation.
X: The oil phase is agglomerated and separated.

(Usage: Sensory evaluation)
The cosmetics of each example and comparative example were actually used, and the following sensory evaluations were performed by three panelists on the presence or absence of profound feeling, gel crumble feeling, skin familiarity, smoothness, and freshness at that time, and the average. The points were used as a comprehensive evaluation.
・ Evaluation criteria <Profound feeling>
5 points: Very profound feeling 4 points: Profound feeling 3 points: Normal 2 points: Less profound feeling 1 point: No profound feeling <Gel crumbled feeling>
5 points: Very gel collapse feeling 4 points: Gel collapse feeling 3 points: Normal 2 points: Gel collapse feeling is small 1 point: Gel does not collapse feeling <Skin familiarity>
5 points: Very familiar to the skin 4 points: Good to fit the skin 3 points: Normal 2 points: Not familiar to the skin 1 point: Not very familiar to the skin <Smoothness>
5 points: Very smooth 4 points: Smooth 3 points: Normal 2 points: Low smoothness 1 point: Very low smoothness <Freshness>
5 points: Very freshness 4 points: Freshness 3 points: Normal 2 points: Low freshness 1 point: Very freshness

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

Examples 6 to 9 are examples in which the formulation of the fluid gel was changed as shown in Table 1, and the fluid gel was prepared in the same manner as in Example 1. Comparative Example 1 is an example of using the fluidity gel having a large average particle size alone among the fluidity gels prepared in the same manner as in Examples 1 to 5, and Comparative Example 2 is a fluidity having a small average particle size. This is an example of using the gel alone.

The details of the ingredients in Table 1 are as follows.
・ Gellan gum: Kelkogel / DSP Gokyo Food & Chemical Co., Ltd. ・ Agar: Ina Kanten CS-310 / Ina Food Industry Co., Ltd. ・ Carrageenan: Carrageenan CS-3 / Ina Food Industry Co., Ltd. ・ Xanthan gum: Nomcoat ZZ / day Locust Bean Gum manufactured by Qing Oillio Group Co., Ltd .: Locust Bean Gum CS / Manufactured by Ina Food Industry Co., Ltd.

Sensory evaluation of usability was performed for Examples 1 to 9 and Comparative Examples 1 and 2. The results are shown in Table 2. In Comparative Example 1, the evaluation of the profound feeling and the feeling of the gel collapsing was excellent, but the evaluation of the smoothness and the freshness was inferior. On the contrary, Comparative Example 2 was excellent in the evaluation of smoothness and freshness, but was inferior in the evaluation of the profound feeling and the feeling of gel collapse.

Among the examples, the one with the best overall evaluation was Example 5, and the next best was Example 4. This is a mixture of a fluid gel with a large average particle size, a fluid gel with a small average particle size, and a fluid gel with an intermediate average particle size. As a result, it is considered that the overall evaluation was excellent. Moreover, the comprehensive evaluation results of Examples 1 to 3 and Examples 6 to 9 were superior to those of Comparative Example 1 and Comparative Example 2. It is considered that this is because the lacking feels of Comparative Examples 1 and 2 were supplemented by mixing the fluidized gels having different average particle sizes, and the overall evaluation was enhanced.

[Examples 10 to 18, Comparative Examples 3 and 4]
A fluid gel was prepared according to the formulation shown in Table 3 below. Specifically, in Examples 10 to 14, 0.1 part by mass of gellan gum, 0.04 part by mass of calcium chloride, and 30 parts by mass of water were heated and dissolved at 85 ° C., and then cooled to room temperature to prepare a gel phase. .. Further, an aqueous phase in which 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 were separately mixed was heated and dissolved at 85 ° C., and then cooled to room temperature. After immersing the gel phase in the aqueous phase, it was crushed with a homomixer. The pulverization was performed under the three conditions shown in Table 3 (particle size: large, medium, and small), and three types of fluid gels (average particle size: large, medium, and small) having different average particle sizes were prepared. The average particle size, viscosity, and specific gravity of each fluidized gel are as shown in Table 3. The fluidized gels of Examples 10 to 14 were obtained by mixing the fluidized gels having the respective average particle diameters at the mixing ratios shown in the compounding ratios in Table 3. The details of the compounding ingredients in Table 3 are the same as those in Table 1.

Examples 15 to 18 are examples in which the formulation of the fluid gel was changed as shown in Table 3, and the fluid gel was prepared in the same manner as in Example 10. Comparative Example 3 is an example in which the fluidity gel having a large average particle size is used alone among the fluidity gels prepared in the same manner as in Examples 10 to 14, and Comparative Example 4 is a fluidity having a small average particle size. This is an example of using the gel alone.

Sensory evaluation of usability was performed on Examples 10 to 18 and Comparative Examples 3 and 4. The results are shown in Table 4. In Comparative Example 3, the evaluation of the profound feeling and the feeling of the gel collapsing was excellent, but the evaluation of the smoothness and the freshness was inferior. On the contrary, Comparative Example 4 was excellent in the evaluation of smoothness and freshness, but was inferior in the evaluation of the profound feeling and the feeling of gel collapse.

Among the examples, the one with the best overall evaluation was Example 14, and the next best was Example 13. This is a mixture of a fluid gel with a large average particle size, a fluid gel with a small average particle size, and a fluid gel with an intermediate average particle size. As a result, it is considered that the overall evaluation was excellent. Moreover, the comprehensive evaluation results of Examples 10 to 12 and Examples 15 to 18 were superior to those of Comparative Example 3 and Comparative Example 4. It is considered that this is because the lacking feels of Comparative Examples 3 and 4 were supplemented by mixing the fluidized gels having different average particle sizes, and the overall evaluation was enhanced.

Further, when Table 2 and Table 4 are compared, Example 2 and Example 11, Example 3 and Example 12, Examples 8 and 17, Example 9 and Example 18, Comparative Example 1 and Comparative Example 3 In Comparative Example 2 and Comparative Example 4, the examples and comparative examples in Table 4 were superior in overall evaluation. This result is considered to show 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 aqueous phase and then crushed. In other words, since a hard gel is crushed, the feel of the gel appears more clearly than when a gel that is not crushed, so the results of the evaluation items for the profound feeling and the feeling of collapse of the gel are good. It is thought that it became. In addition, by preparing the gel phase and the aqueous phase separately instead of simply crushing the gel, the feel of the aqueous phase becomes clearer, and the results of the evaluation items for smoothness and freshness are improved. It is thought that it was.

[Examples 16 to 25]
The oily substance is mixed according to the formulation shown in Table 5 below, and this is added to the fluidized gel of Example 1 or Example 10 and mixed to disperse the oily phase in the fluidized gel, and the oil phase is 0.1 mm to 2 mm. A cosmetic having oil droplets was prepared. Mixing of the oil phase into the fluid 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 fluidized gel was 90% by mass. For the oily substance before being added to the fluid gel, the specific gravity at 25 ° C. is measured, and the viscosity at 25 ° C. is measured to determine the viscosity difference and the specific gravity difference from the fluid gel of Example 1 or Example 10. Calculated. In addition, the stability and average diameter of the oil phase in the fluidized gel were evaluated for the fluidized gel in which the oil phase was dispersed. Furthermore, the specific gravity and viscosity of the cosmetic at 25 ° C. were measured.

Details of the components in Table 5 are as follows.
-Methylphenylpolysiloxane: KF-54 / manufactured by Shin-Etsu Chemical Co., Ltd.-Methylpolysiloxane: KF96A-5CS / manufactured by Shin-Etsu Chemical Co., Ltd.-Glycerin fatty acid ester: Saracos HG-8 / manufactured by Nisshin Oillio Group Co., Ltd.-Flow Paraffin: Liquid Paraffin No.70-S / Sanko Chemical Industry Co., Ltd., Diphenyldimethicone: KF-54HV / 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, and 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, in the result of Example 23, the oil phase was agglomerated slightly upward, but there was no separation. As a result of Example 19 and Example 25, the oil phase was aggregated upward and separated. As a result of Example 24, the oil phase was aggregated downward and separated.

Regarding the results of Examples 16 to 18 and Examples 20 to 22 , the results were good because the viscosity difference between the oily substance and the fluid gel was 2000 mPa · s or less and the specific gravity difference was 0.050 or less. Conceivable. Regarding the results of Example 19, it is probable that the viscosity difference between the oily substance and the fluidized gel was 2000 mPa · s or less, but the specific gravity difference exceeded 0.050, so that the oil phase aggregated downward and separated. .. On the other hand, regarding the results of Example 23, the viscosity difference between the oily substance 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 were compared, the specific densities were the same, but the difference in viscosity was smaller in Example 23, so unlike the results in Example 19, the oil phase was upward, although not enough to separate. It is probable that the result was agglomeration. Regarding the results of Examples 24 and 25, since the viscosity difference between the oily substance and the fluidized gel exceeded 2000 mPa · s and the specific gravity difference exceeded 0.050, the dispersibility of the oil phase could not be maintained and the oil phase became It is probable that the result was that they aggregated and separated.

Although some embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments, omissions, replacements, modifications, etc. thereof are included in the scope and gist of the invention, as well as in the scope of the invention described in the claims and the equivalent scope thereof.

Claims (10)

Forming a gel by heating and dissolving a gelling agent and a gelation accelerator in an aqueous solvent and cooling.
The gels are each crushed using two or more different crushing conditions to obtain two or more fluid gels having different average particle sizes, and
Mixing two or more types of fluid gels with different average particle sizes,
Including
Of the two or more types of fluid gels having different average particle diameters, the fluid gel having the largest average particle diameter has an average particle diameter of 100 μm or more, and the fluid gel having the smallest average particle diameter has an average particle diameter of 100 μm. Less than, how to make cosmetics. The method for producing a cosmetic according to claim 1, wherein the gel is immersed in a second aqueous solvent before the gel is crushed, and the gel is crushed in a state of being immersed in the second aqueous solvent. Wherein the aqueous solvent further addition of polymeric material, cosmetics manufacturing method according to claim 1 or 2 to form the gel. Before SL is added to the second aqueous solvent soaking the gel further polymeric substances, cosmetic method according to claim 2. The method for producing a cosmetic according to any one of claims 1 to 4 , further comprising forming a dispersed oil phase by adding and mixing an oily substance to the fluidized gel. Or less viscosity difference is 2000 mPa · s and the fluidity gel and the oily substance in 25 ° C., and the specific gravity difference between the oily substance and the fluidity gel at 25 ° C. is 0.050 or less, claim 5 The method for manufacturing cosmetics described in. A fluid gel obtained by crushing a gel containing a gelling agent, a gelation accelerator, and an aqueous solvent, which is obtained by mixing two or more kinds of the fluid gels having different average particle sizes.
Of the two or more types of fluid gels having different average particle diameters, the fluid gel having the largest average particle diameter has an average particle diameter of 100 μm or more, and the fluid gel having the smallest average particle diameter has an average particle diameter of 100 μm. Less than cosmetics. The cosmetic according to claim 7 , wherein the fluid gel contains an aqueous solvent phase composed of a second aqueous solvent together with a gel phase composed of a crushed product of the gel. The cosmetic according to claim 7 or 8 , which comprises the fluidized gel as a matrix phase and an oily phase in which a liquid oily substance is dispersed as a dispersed phase in the fluidized gel. The cosmetic according to claim 9 , wherein the oil phase has an average diameter of 0.1 mm to 2 mm.