JP6339376B2 - Cosmetics - Google Patents

Description

  The present invention relates to a cosmetic excellent in storage stability and use feeling.

  Tocopherol is insoluble in water, but tocopherol phosphate ester (tocopheryl phosphate ester) or a salt thereof is soluble in water and is therefore incorporated in various pharmaceuticals and cosmetics as an easy-to-use tocopherol raw material. (Patent Document 1, Patent Document 2). However, it has been pointed out that when blended in an emulsification system or the like in which a divalent metal salt is dissolved, aggregation of the emulsified micelle occurs and precipitation occurs. In order to suppress the occurrence of such agglomeration and precipitation, there has been proposed a method of stabilizing the emulsion by using a polyhydric alcohol and a phosphate such as dipotassium hydrogen phosphate (Patent Document 3). Further, sodium salt of tocopheryl phosphate (sodium tocopheryl phosphate) is an anionic amphiphile and is known to have a surface active function (Non-patent Document 1). Attempts have been made to prepare an emulsified composition by utilizing the surface active ability of this sodium tocopheryl phosphate (Patent Document 4, Patent Document 5, Patent Document 6, Non-Patent Document 1).

On the other hand, cosmetics are applied directly to the skin, and in consideration of the burden on the skin, attempts have been made to reduce the amount of additives other than the ingredients to be supplied to the skin as much as possible or to eliminate them. Yes. As an emulsified cosmetic containing a salt of a tocopherol phosphate, a stable cosmetic emulsified composition that does not use a surfactant is known. As such cosmetics with stable emulsification, the present applicant has previously proposed the invention of Patent Document 7. In the emulsion composition, the emulsion particle size of the emulsion composition containing a salt of tocopheryl phosphate, polyoxyalkylene glycerin or cyclohexanedicarboxylic acid polyoxyethylene alkyl ether, and a polyhydric alcohol has a tocopheryl phosphate It finds a phenomenon that it becomes smaller and more stable than when emulsified with an ester salt alone, and this is used in cosmetics.
Further, a D-phase emulsification method (Non-Patent Document 2) is known as an emulsification method for obtaining a fine oil-in-water emulsion using a surface science technique. The D-phase emulsification method starts with a surfactant isotropic solution (phase D) containing water and a polyhydric alcohol, and an oil phase is dispersed in the surfactant solution to obtain an O / D gel emulsion (O / D emulsion). Gel) is formed, and water or an aqueous phase is added to the gel emulsion to form an O / W emulsion having a small emulsion particle diameter (Non-patent Document 3). In general, when the O / D gel is diluted with an aqueous phase to obtain a cosmetic such as a lotion, it is not possible to add a wax which is a solid oil as compared with a preparation method using a mixed emulsification method. It is said that.

  The inventor of the present application has continued research on finely emulsifying an oil agent using a tocopheryl phosphate ester salt. The applicant of the present application previously prepared a gel composition prepared by dispersing an oil in a mixed solution of glycerin and 1,2-pentanediol and a tocopheryl phosphate ester salt, and the gel composition in water or an aqueous phase. A patent application has been filed as Japanese Patent Application No. 2013-042204 for an invention relating to an emulsified particle size (particle size of an oil phase) of an emulsified composition obtained by dilution.

  On the other hand, the applicant has invented a novel emulsion composition containing an oily component mainly composed of an amino acid-based oil, non-hydrogenated lecithin, 1,2-pentanediol and glycerin, and has filed a patent application (Patent Document 8). This invention relates to an emulsified composition comprising nano-sized oil phase particles of less than 1 μm obtained without using a high-pressure emulsifier such as a microfluidizer. However, when this emulsion composition is diluted with a large amount of water or an aqueous phase to prepare a cosmetic such as a skin lotion, a problem may occur in storage stability.

Japanese Patent No. 3035742 Japanese Patent No. 3950216 Japanese Patent No. 3186663 JP 09-309813 A JP 2007-160287 A JP 2011-016761 A JP 2012-206956 A JP 2012-116783 A

Sadasaka Saka et al., Issued June 20, 2006, 140 pages of Journal of the Japan Cosmetic Engineers Association, 2006 Fragrance Journal, 4, 34-41 (1993) Hiromichi Kajitani et al., Oil Chemistry, Vol. 40, No. 11, pp. 988-994, 1991

  An object of the present invention is to obtain a cosmetic that contains an oil, has high storage stability even at low viscosity, and has excellent usability.

  The present inventor uses a gel composition (O / D gel) prepared by dispersing an oil in a mixed solution of tocopheryl phosphate ester salt, non-hydrogenated lecithin, glycerin and 1,2-pentanediol with water or water. The cosmetic obtained by diluting with a phase was found to have high storage stability even when the viscosity was low, and excellent in the feeling of use, and the present invention was completed.

The main configuration of the present invention is as follows.
(1) Cosmetics containing the following (A) to (E).
(A) Tocopheryl phosphate salt (B) Non-hydrogenated lecithin (C) Polyhydric alcohol containing glycerin and 1,2-pentanediol (D) Oil agent (E) Water (2) (A) Tocopheryl The cosmetic according to (1), wherein the phosphate ester salt is sodium tocopheryl phosphate.
(3) (D) The oil agent is isotridecyl isononanoate, isostearyl neopentanoate, dilauroyl glutamate (phytosteryl / octyldodecyl), glyceryl 2-ethylhexanoate, pentaerythritol tetra-2-ethylhexanoate, dimerlinoleic acid di ( The cosmetic according to (1) or (2), which is at least one selected from (isostearyl / phytosteryl), squalane, macadamia nut oil, and sunflower seed oil.
(4) Cosmetics in any one of (1)-(3) which contains 1-25 mass% of (D) oil agent.
(5) The cosmetic according to any one of (1) to (3), wherein (E) water is derived from an aqueous phase containing other water-soluble components constituting the cosmetic.
(6) (E) Cosmetics as described in (5) containing 75-95 mass% of water.
(7) Cosmetics as described in (5) or (6) whose viscosity in 25 degreeC is 1000 mPa * s or less when measured with a B-type viscosity meter.

The cosmetic of the present invention has a high storage stability while maintaining a single layer without being separated into two layers under a severe test at 50 ° C. for 2 weeks even in a low-viscosity state containing no water-soluble polymer.
Of the cosmetics of the present invention, especially the lotion exhibits a low viscosity of 1000 mPa · s or less at 25 ° C., has high storage stability, and is excellent in the feeling of use.
The cosmetic of the present invention can be made into a cosmetic without containing an emulsifier other than tocopheryl phosphate ester or a salt thereof and non-hydrogenated lecithin. An oil agent, which is said to be difficult to mix stably without the addition of a surfactant, can be blended, and the feeling of use of the skin lotion is good for the skin and has a high moisturizing effect.
The cosmetics of the present invention can also be used as cosmetics such as serums, emulsions, gels, creams, packs, sunscreens and the like. Moreover, it can be used also as external preparations for skin, such as quasi-drugs and pharmaceuticals, by blending ingredients approved as pharmaceuticals and quasi-drugs.

The cosmetic of the present invention is a cosmetic containing the following (A) to (E).
(A) Tocopheryl phosphate salt (B) Non-hydrogenated lecithin (C) Polyhydric alcohol (D) Oil agent (E) Water Also, the cosmetic of the present invention comprises an O / D gel emulsion and a D phase emulsification method. Prepare by applying technology. That is, an O / D gel comprising (A) a salt of tocopheryl phosphate, (B) non-hydrogenated lecithin, (C) a polyhydric alcohol, and (D) an oil agent is prepared, and this is prepared as (E) water or an aqueous phase. Disperse into cosmetics.

Essential Component (A) Tocopheryl Phosphate Salt The tocopheryl phosphate salt used in the present invention may be any salt, but the salt may be an alkali metal salt such as sodium salt, disodium salt, potassium salt, dipotassium salt. good. Particularly preferred is sodium tocopheryl phosphate. The amount of the tocopheryl phosphate salt is 0.2 to 5% by mass, preferably 0.2 to 2% by mass, more preferably, per O / D gel in preparing the O / D gel. It is preferable to mix | blend so that it may become 0.2-1.5 mass%.

  Sodium tocopheryl phosphate is in the form of a white or slightly yellow powder and is readily soluble in water at room temperature. Tocopherol, the starting material for sodium tocopheryl phosphate, has vitamin E function. Vitamin E is a useful vitamin as a fat-soluble vitamin, and has the function of protecting the skin from oxidative stress caused by ultraviolet rays in cooperation with water-soluble antioxidant compounds such as vitamin C. Sodium tocopheryl phosphate is a compound derivatized to improve vitamin E (tocopherol) because it is chemically unstable. Sodium tocopheryl phosphate is converted into vitamin E by dephosphorylating enzyme in the skin, and it exhibits antioxidant and anti-inflammatory effects to improve rough skin. It is blended in an external preparation. Moreover, since it also has an antioxidant action, it is blended as an antioxidant. Sodium tocopheryl phosphate is an amphiphilic vitamin E derivative having both hydrophilic and lipophilic properties and has high permeability to the skin. As sodium tocopheryl phosphate, commercially available “Vitamin E sodium phosphate” manufactured by Showa Denko KK can be used.

(B) Non-hydrogenated lecithin Generally, lipid products containing phospholipids are collectively referred to as lecithin. Particularly, hydrogenated lecithin fatty acid is called hydrogenated lecithin and is used as an emulsifier. Yes. Since hydrogenated lecithin is difficult to dissolve in an oil, heating is essential when preparing an emulsion.
In contrast, the non-hydrogenated lecithin used in the present invention refers to a phospholipid fraction extracted from a natural product that has not been subjected to such processing. Examples of non-hydrogen added lecithin include egg yolk lecithin and soybean lecithin. Non-hydrogenated lecithin is easily dissolved in the oil, and heating is not essential when preparing the emulsion. Non-hydrogenated lecithin can be used alone or in combination of a plurality of non-hydrogenated lecithins.
“Phospholipon 85G” manufactured by Phospholipid GmbH can be used as a commercially available non-hydrogenated lecithin. “Phospholipon 85G” comprises 99.7% soybean phospholipid and 0.3% tocopherol, and the composition of soybean phospholipid is 85% or more of phosphatidylcholine and 6% or less of lysophosphatidylcholine. When the phosphatidylcholine content is high, the emulsifying ability is increased. Therefore, non-hydrogenated lecithin having a phosphatidylcholine content of 85% or more is used.
The amount of lecithin not added with hydrogen is 0.5 to 5% by mass, particularly preferably 2 to 5% by mass, per O / D gel. If the amount is less than 0.5% by mass, the oil agent may not be able to have a nano-sized emulsified particle diameter of less than 1 μm when diluted with a water phase. If it exceeds 5% by mass per O / D gel, the O / D gel may thicken and it may become difficult to stir.

(C) Polyhydric alcohol It is preferable that the polyhydric alcohol blended in the present invention contains two components of glycerin and 1,2-pentanediol. The polyhydric alcohol used in the present invention may be any standard as long as it can be used in cosmetics.
When blending glycerin and 1,2-pentanediol as the polyhydric alcohol, the total amount of both components is preferably 40 to 50% by mass per O / D gel.

In the cosmetic of the present invention, a polyhydric alcohol other than glycerin and 1,2-pentanediol can be arbitrarily blended within a range that does not impair the effects of the present invention. Examples of such polyhydric alcohols include diglycerin, 1,3-butylene glycol, propylene glycol, dipropylene glycol, polyethylene glycol, sorbitol and the like.
Polyhydric alcohols other than glycerin and 1,2-pentanediol are preferably blended in the dilution water or aqueous phase when diluting the O / D gel to make a cosmetic.

(D) Oil agent The oil agent used in the present invention is preferably a liquid oil such as triglyceride, liquid wax, ester oil, hydrocarbon oil, silicone oil or the like. It should be noted that the oil agent can be preferably used as long as it is dissolved or mixed in the polyhydric alcohol even if it is in the form of wax or paste at room temperature. For example, a wax-like or paste-like oil agent is blended after being dissolved in an oil agent (oil component) such as squalane, triethylhexanoin, cetyl ethylhexanoate, liquid paraffin, and cyclomethicone that is liquid at room temperature.

The following can be illustrated as such an oil agent.
Triglycerides include olive oil, macadamia nut oil, sunflower seed oil, avocado oil, safflower oil, rice bran oil, rice germ oil, wheat germ oil, castor oil, grape seed oil, almond oil, palm oil, palm oil, tri (capril / Examples of liquid waxes such as glyceryl capric acid and glyceryl tri-2-ethylhexanoate include jojoba oil.
Examples of ester oils include cetyl ethylhexanoate, 1,3-butylene glycol diisononanoate, 1,3-butylene glycol di-2-ethylhexanoate, dipropylene glycol diisononanoate, dipropylene glycol di-2-ethylhexanoate, Isononyl isononanoate, neopentyl glycol dicaprate, ethylhexyl palmitate, isostearyl neopentanoate, dilauroyl glutamate (phytosteryl / octyldodecyl), pentaerythritol tetra-2-ethylhexanoate, isostearyl dihydrogen linoleate / phytosteryl, etc. Can be illustrated.
Examples of the hydrocarbon oil include liquid paraffin, squalene, squalane, and microcrystalline wax.
Examples of silicone oils include linear polysiloxanes such as dimethylpolysiloxane and methylphenylpolysiloxane, and cyclic polysiloxanes such as decamethylcyclopentasiloxane and cyclopentasiloxane.

  In the ester oil as the oil used in the cosmetic of the present invention, isotridecyl isononanoate, isostearyl neopentanoate, dilauroyl glutamate (phytosteryl / octyldodecyl), glyceryl 2-ethylhexanoate, pentaerythritol tetra-2-ethylhexanoate, die It is particularly preferable to use dimer of merlinoleic acid (isostearyl / phytosteryl), squalane for hydrocarbon oils, and macadamia nut oil and sunflower seed oil for triglycerides. An oil agent mix | blends 1-25 mass% in O / D gel.

(E) Water You may further mix | blend the polyhydric alcohol, ethanol, antiseptic | preservative, cosmetics component, medicinal component, etc. which are normally mix | blended with cosmetics as an arbitrary component in an aqueous phase. When the cosmetic of the present invention is used as a skin lotion, the amount of water or aqueous phase is 75 to 95% by mass of the total amount of the cosmetic.

  In order to obtain the cosmetic of the present invention, a phase D is obtained from a mixed solution of (A) tocopheryl phosphate ester salt, (B) non-hydrogenated lecithin, (C) glycerin and 1,2 pentanediol. A gel is first prepared. Next, (D) oil agent is added to this mixture (D phase gel), and the oil agent is dispersed by stirring to prepare an O / D gel. This O / D gel is diluted with (E) water to a desired concentration to prepare the cosmetic of the present invention.

A part of water may be blended with the D phase in advance. When water is added to the D phase, the amount of water should not exceed 5% by mass per O / D gel. When the amount exceeds 5% by mass, the particle size of the oil agent (oil phase) of the O / D gel becomes large, and the particle size of the oil phase may exceed 300 nm, which is not preferable.
Also, after mixing all of the oil (oil phase) to obtain an O / D gel, the viscosity of the O / D gel is adjusted by adding water or a part of the aqueous phase, and the handling properties of the O / D gel Can also be improved. The component ratio of the O / D gel that can be stored for a long period of time is as follows (the unit of the blending amount of the composition is mass%).
(A) Tocopheryl phosphate salt 0.2-1.5
(B) Non-hydrogenated lecithin 2-5
(C) Polyhydric alcohol 40-50
(D) Oil agent 1-25
(E) Water residue

  In the cosmetic of the present invention, immediately after adjusting the O / D gel, water or an aqueous phase is added to obtain a cosmetic. Or it is also possible to preserve | save in the state of an O / D gel and an aqueous phase, and to prepare at the time of use. The operation of adding a water phase to an O / D gel to make a cosmetic can be easily and instantly prepared, and thus is useful in production. For example, a lotion can be easily prepared by adding 80% by mass of water or an aqueous phase to 20% by mass of the O / D gel that can be stored for a long period of time and stirring. The lotion has a low viscosity, but the oil particles are stably dispersed.

Optional components The cosmetics of the present invention include components usually used in cosmetics, for example, thickeners, antioxidants, ultraviolet absorbers, moisturizers, fragrances, and preservatives, as long as the effects of the invention are not impaired as optional components. Perfumes, preservatives, pH adjusters, blood circulation promoters, cooling agents, antiperspirants, fungicides, skin activators, other cosmetic ingredients, medicinal ingredients, and the like can be blended.

In the cosmetic of the present invention, a thickener can be blended for the purpose of adjusting the feeling of use, particularly the feeling of giving a thick feeling of use of the polymer. When a thickener is blended, a water-soluble polymer is preferable. The water-soluble polymer may be a natural polymer, a semisynthetic polymer, or a synthetic polymer.
Examples of natural polymers include tragacanth gum, karaya gum, xanthan gum, guar gum, cationized guar gum, anionized guar gum, tara gum, gum arabic, tamarind gum, gellan gum, locust bean gum, carrageenan, quince seed, dextran, and the like.
Examples of the semisynthetic polymer include hydroxypropyl methylcellulose, sodium carboxymethylcellulose, methylcellulose, cationized cellulose, propylene glycol alginate, sodium alginate, bentonite and the like.
Examples of the synthetic polymer include carboxyvinyl polymer, polyvinyl pyrrolidone, polyvinyl alcohol, dialkyl polyethylene glycol, polyoxyethylene dioleic acid methyl glucoside, polyethylene glycol, polyethylene glycol distearate, synthetic smectite, and the like.
Two or more thickeners may be combined.

  When blending a thickener for the purpose of touch control, it is preferable to blend 0.01 to 0.3% by mass of the total amount of the cosmetic. Most preferably, it is 0.01-0.2 mass%. If the blending amount exceeds 0.2 mass, the water-soluble polymer may have an unpleasant touch that is sticky or sticky, which may impair the effects of the present invention. In this case, the problem may be solved by selecting the type of thickener.

Hereinafter, the present invention will be described in more detail with reference to comparative examples and examples.
1. Preparation and evaluation of cosmetics (skin lotion) (oil phase particle measurement test, storage stability, feeling of use)
(1) Preparation of cosmetics Cosmetics of Examples 1 to 11 and Comparative Examples 1 to 24 having the compositions shown in Tables 1 to 5 were prepared. In each table, the unit of the amount of composition is mass%. The preparation procedure is as follows.
1. (A) Tocopheryl phosphate ester salt, (B) non-hydrogenated lecithin, and (C) polyhydric alcohol (glycerin and 1,2-pentanediol) are mixed to form D phase.
2. Next, (D) an oil agent is gradually added and stirred to prepare an O / D gel. The O / D gel was prepared at room temperature. Depending on the composition, it may be prepared by heating and dissolving.
Moreover, 0.3 mass% of phenoxyethanol is added in order to prevent the contamination by microorganisms and the influence on the test in both the comparative example and the example.
3. The O / D gel is diluted with (E) water to obtain cosmetics of Examples and Comparative Examples.

(2) Evaluation of cosmetics 2-1. Particle diameter measurement and confirmation of uniformity The particle diameter (volume average) and uniformity of the oil phase of the cosmetics of Examples and Comparative Examples in Tables 1 to 5 were measured. The measurement was performed immediately after preparation. When the oil phase was separated during the preparation or immediately after the preparation, it was indicated as (−) in the table as impossible to measure.
(Oil phase particle size)
The particle size (volume average) of the oil phase was measured with a laser diffraction particle size distribution meter.

(Uniformity of oil phase particle size)
The uniformity was evaluated using the half-value width obtained when determining the volume average particle diameter of the oil phase as an index. The half width is the particle size distribution width when the volume peak of the obtained particle size distribution is halved. The half-value width can be determined by measuring the particle size distribution in the emulsion composition using a laser diffraction particle size distribution meter.
The smaller the half-value width, the narrower the particle size distribution width of the oil agent particles, and the more homogenized it is. Moreover, it becomes an index | indication that emulsification stability is so high that the value of a half value width is small.

2-2. Visual observation Each cosmetic of the obtained Examples and Comparative Examples was put in a transparent glass bottle and stored at 50 ° C. for 14 days. The appearance of each cosmetic after storage was visually observed and judged according to the following criteria.
(Judgment criteria)
○: Cloudy liquid (one layer)
X: The white turbid liquid is separated into two layers or separated into a transparent liquid and a white turbid liquid (poor as cosmetics)

2-3. Feeling of use The obtained cosmetic was actually applied to the skin by a special panel, and the feeling of use was evaluated according to the following criteria. Those separated into two layers were not evaluated for use feeling (because evaluation was difficult) and indicated as (-) in the table.
(Judgment criteria)
○: When applied to the skin, there is no sensation on the skin, and the skin is well-adapted. ×: When applied to the skin, there is a feeling of being shed on the skin, and the skin is not familiar.

(3) Results The compositions of Comparative Examples 1 to 6 (the upper part of Table 1) do not contain (B) non-hydrogenated lecithin, which is an essential component of the present invention, and (A) sodium tocopheryl phosphate and (C) many It is a composition of cosmetics (skin lotion) obtained by diluting (D) water with an O / D gel prepared by mixing (D) oil agent in a mixture with a monohydric alcohol.
The lower part of Table 1 shows the results of visual observation after storage for 14 days at 50 ° C., the particle size of the oil phase in each cosmetic of Comparative Examples 1 to 6, the half-value width. In addition, since the cosmetics of Comparative Examples 1 to 6 were all separated into two layers after being stored at 50 ° C. for 14 days, the usability was not evaluated.
The particle size of the oil phase in each lotion immediately after preparation is 0.392 μm for Comparative Example 1, 0.419 μm for Comparative Example 2, 0.389 μm for Comparative Example 3, 0.601 μm for Comparative Example 4, and 0.601 μm for Comparative Example 5. It was 0.349 μm. Comparative Example 6 was separated into two layers at the stage where (D) oil was mixed to prepare an O / D gel. Moreover, when the lotion of Comparative Examples 1-6 was stored at 50 degreeC for 14 days, all the lotions were divided into two layers, and it was evaluated that the storage stability as a cosmetic was poor.

  The composition of Comparative Examples 7 to 12 in Table 2 is that the blending amount of (A) sodium tocopheryl phosphate having the composition of Table 1 is changed from 0.1% by mass to 0.2% by mass, and the blending amounts of other components are the same It is. As shown in the lower part of Table 2, (A) the amount of sodium tocopheryl phosphate was doubled from 0.1% by mass to 0.2% by mass, but a cosmetic excellent in storage stability could not be obtained. It was.

  In Comparative Examples 13 to 18 in the upper part of Table 3, (B) non-hydrogenated lecithin and (C) polyhydric alcohol were mixed without containing (A) sodium tocopheryl phosphate which is an essential component of the present invention. It is the composition of cosmetics (skin lotion) obtained by diluting an O / D gel prepared by mixing (D) an oil agent therein with (E) water. The particle size of the oil phase in the lotion immediately after preparation was 0.643 μm for Comparative Example 15, 0.833 μm for Comparative Example 16, and 1.353 μm for Comparative Example 17. Comparative examples 13 and 14 were separated when (D) oil was mixed to prepare an O / D gel. When the skin lotions of Comparative Examples 13 to 18 were stored at 50 ° C. for 14 days, all the skin lotions were separated into two layers, and the storage stability as a cosmetic was evaluated as poor.

Table 4 shows the compositions of Examples 1 to 6 of the present invention.
Examples 1 to 6 were prepared by mixing (D) an oil agent in a mixture of essential components (A) sodium tocopheryl phosphate, (B) non-hydrogenated lecithin, and (C) polyhydric alcohol. This is a cosmetic (skin lotion) obtained by diluting an O / D gel with (E) water. The particle size of the oil phase in each lotion immediately after preparation was 0.189 μm in Example 1, 0.188 μm in Example 2, 0.199 μm in Example 3, 0.192 μm in Example 4, and 0.192 μm in Example 5. 0.189 μm and Example 6 were 0.222 μm. Moreover, the half width was as small as 0.193 to 0.232, and the particle size of the oil phase was uniform. Moreover, when the skin lotions of Examples 1 to 6 were stored at 50 ° C. for 14 days, they all maintained a single appearance without being separated into two layers, and were excellent in storage stability as cosmetics.
Furthermore, the lotions of Examples 1 to 6 had no feeling of being repelled by the skin when applied to the skin, had excellent skin familiarity, and had a moist use feeling and high moisture retention.

Table 5 shows the compositions of Examples 7 to 11 and Comparative Examples 19 to 24.
Examples 7 to 11 are compositions of cosmetics (skin lotions) in which the oil agent of component (D) is an oil agent different from those in Examples 1 to 5. The particle size of the oil phase in each lotion immediately after preparation is 0.190 μm in Example 7, 0.196 μm in Example 8, 0.199 μm in Example 9, 0.188 μm in Example 10, and 0.188 μm in Example 11. It was 0.194 μm. Moreover, the half width was as small as 0.193 to 0.221, and the particle size of the oil phase was uniform.
Moreover, when the lotions of Examples 7 to 11 were stored at 50 ° C. for 14 days, all of them maintained a single appearance without being separated into two layers, and were excellent in storage stability as cosmetics. Furthermore, the lotions of Examples 7 to 11 had no feeling of being repelled by the skin when applied to the skin, had excellent skin familiarity, and had a moist use feeling and high moisture retention.
On the other hand, when the lotions of Comparative Examples 19 to 22 lacking the constituents of the present invention were stored at 50 ° C. for 14 days, each lotion was divided into two layers, and the storage stability as a cosmetic was poor. .
Comparative Examples 23 and 24 are compositions in which the component (B) of Examples 10 and 11 was replaced with hydrogenated lecithin, but each lotion was divided into two layers, and the storage stability as a cosmetic was poor. there were.

From the results of the measurement results of the oil phase particles in the cosmetics having the compositions shown in Tables 1 to 5, the half-value width, and the storage test results at 50 ° C. for 14 days,
(1) High pressure homogenizer by (A) tocopheryl phosphate, (B) non-hydrogenated lecithin, (C) polyhydric alcohol containing glycerol and 1,2-pentanediol, (D) oil and (E) water (2) The particle size of the oil phase in the obtained cosmetic is sufficiently refined;
(3) Furthermore, the obtained cosmetic was stable without being separated into two layers even when stored at 50 ° C. for 14 days,
Became clear.
Moreover, the 25 degreeC viscosity (measurement using a B type viscometer) of the cosmetics of Examples 1-11 was a low viscosity of 1000 mPa * s or less.
The cosmetics of Examples 1 to 11 had good storage stability without being separated into two layers even under a severe test of 14 days at 50 ° C., although they did not contain a water-soluble polymer. In addition, when applied to the skin, the skin did not feel repelled, and the skin was well-familiar, moisturized and highly moisturizing, and it had an excellent feeling of use with no stickiness or stickiness.

The cosmetic formulation of the present invention, the feeling of use of the cosmetic material, and the evaluation of storage stability are shown below.
[Prescription Example 1]
(1) Moisturizing lotion formula Ingredients Amount (% by mass)
1. Sodium tocopheryl phosphate 0.1
2. Non-hydrogenated lecithin 0.6
3. Glycerin 8
4.1,2-Pentanediol 2
5. Lauroyl glutamate di (phytosteryl / octyldodecyl) 3
6). Sunflower seed oil 1
7). Macadamia nut oil 1
8). Betaine 3
9. Xanthan gum 0.03
10. Phenoxyethanol 0.2
11. Dipotassium glycyrrhizinate 0.1
12 Purified water residue

Ingredients 1 to 4 are gradually added with ingredients 5 to 7 and mixed to obtain an O / D gel. Next, components 8 to 12 were added to obtain a moisturizing lotion.

(2) Characteristics The moisturizing lotion of Formulation Example 1 had a well-familiar and moist feel and high moisturizing properties and excellent storage stability.

[Prescription Example 2]
(1) Prescription of moisturizing lotion
Ingredient Amount (% by mass)
1. Sodium tocopheryl phosphate 0.2
2. Non-hydrogenated lecithin 0.6
3. Glycerin 10
4.1,2-Pentanediol 2
5. Lauroyl glutamate di (phytosteryl / octyldodecyl) 3
6). Hydrogenated dimer dilinoleate isostearyl / phytosteryl 1
7). Isostearyl neopentanoate 1
8). Carboxyvinyl polymer 0.05
9. Potassium hydroxide 0.016
10.1,3-butylene glycol 5
11. Sodium hyaluronate (1% aqueous solution) 2
12 Purified water residue

The mixed components 5 to 7 are gradually added to the mixed components 1 to 4 and mixed to obtain an O / D gel. Next, components 8 to 12 were added to obtain a moisturizing lotion.

(2) Characteristics
The moisturizing lotion of Formulation Example 2 had a well-familiar and moist feeling and high moisturizing properties, and was excellent in storage stability.

Claims (7)

Cosmetics containing the following (A)-(E).
(A) Tocopheryl phosphate salt (B) Non-hydrogenated lecithin (C) Polyhydric alcohol containing glycerin and 1,2-pentanediol (D) Oil agent (E) Water   The cosmetic according to claim 1, wherein the salt of (A) tocopheryl phosphate is sodium tocopheryl phosphate.   (D) The oil agent is isotridecyl isononanoate, isostearyl neopentanoate, dilauroyl glutamate (phytosteryl / octyldodecyl), glyceryl 2-ethylhexanoate, pentaerythritol tetra-2-ethylhexanoate, dimerinolinoleate di (isostearyl / The cosmetic according to claim 1 or 2, wherein the cosmetic is one or more selected from phytosteryl), squalane, macadamia nut oil, and sunflower seed oil.   (D) Cosmetics in any one of Claims 1-3 which contain 1-25 mass% of oil agents.   (E) The cosmetic according to any one of claims 1 to 3, wherein the water is derived from an aqueous phase containing other water-soluble components constituting the cosmetic.   (E) Cosmetics of Claim 5 containing 75-95 mass% of water.   The cosmetic according to claim 5 or 6, having a viscosity at 25 ° C of 1000 mPa · s or less when measured with a B-type viscometer.