JP4491377B2 - Aqueous skin cosmetics - Google Patents

Description

  The present invention relates to a water-based skin cosmetic, and more particularly to a transparent or translucent water-based skin cosmetic that is not sticky and has a refreshing feeling of use but has a moist feeling after use.

Aqueous skin cosmetics represented by lotions are one of the essential items for basic cosmetics, and are mainly used to replenish moisture and moisturizing ingredients to the skin.
There are two types of lotions: a lotion with a refreshing feel and a lotion with a moist feel. A user who prefers a refreshing type of skin lotion prefers that the skin feels smooth and sticky after use as well as during use.

However, if you try to obtain a refreshing feel without stickiness, the amount of moisturizer and emollients such as oil is limited, so after use, it feels refreshing without stickiness. It was very difficult to achieve a skin lotion with a moist and soft feel.
Further, in the lotion, the transparency of the appearance is also important. There are also transparent or translucent lotions made into microemulsions by refining the oil, but there was still stickiness due to oils and surfactants for making microemulsions.

  The present invention has been made in view of the above-mentioned problems of the background art, and an object thereof is to a transparent or translucent aqueous skin cosmetic that gives a moist feeling after use, while having a refreshing feeling without stickiness.

As a result of intensive studies on solubilized lotions by the present invention and the like in order to achieve the above-mentioned object, by using a specific surfactant in combination, there is no stickiness and a refreshing feeling after use. The present inventors have found that a transparent aqueous cosmetic that gives a moist feeling can be obtained, and have completed the present invention.
That is, the transparent to translucent aqueous skin cosmetic according to the present invention is characterized by containing a silicone surfactant of HLB 11-13 and dipolyoxyethylene (2) alkyl ether phosphate.
In the present invention, the transparent or translucent aqueous skin cosmetic means that the L value in the Lab color system (Hunter Lab system) of the composition is 40 or more.

In this invention, it is suitable that the compounding quantity of the silicone type surfactant of HLB11-13 is 0.05-2 mass%.
Moreover, it is suitable that the compounding quantity of dipolyoxyethylene (2) alkyl ether phosphoric acid is 0.005-2 mass%.

  According to the present invention, by blending a specific silicone-based surfactant and a specific POE alkyl ether phosphoric acid, the skin is not sticky during use or after use, and after use, A transparent or translucent aqueous skin cosmetic having an excellent moist feeling can be obtained.

The silicone surfactant used in the present invention may be any water-soluble silicone surfactant having an HLB of 11 to 13, such as POE modified organopolysiloxane, POE / POP modified organopolysiloxane, POE. Examples include organopolysiloxanes modified with hydrophilic groups such as sorbitan-modified organopolysiloxane and POE glyceryl-modified organopolysiloxane, preferably modified dimethylpolysiloxane. In the present invention, POE-modified dimethylpolysiloxane is more preferable, and examples thereof include FZ2404, 2412, and 2405 (manufactured by Toray Dow Corning Silicone).
The HLB of the silicone surfactant is 11 to 13, and the effect of the present invention is reduced if the HLB is too small or too large.
The molecular weight of the silicone-based surfactant is not particularly limited, but 1000 to 10,000 is preferable. If the molecular weight is too small, there is a concern of skin irritation, and if the molecular weight is too large, it may affect the feeling of use such as sliminess.

  As the alkyl ether phosphoric acid used in the present invention, dipolyoxyethylene (2) (C12-C15) alkyl ether phosphoric acid or a salt thereof can be used. Examples of the salt include sodium salt, potassium salt, triethanolamine salt and the like. Dipolyoxyethylene (2) (C12-C15) alkyl ether phosphoric acid or a salt thereof is commercially available as an anionic surfactant, such as NIKKOL DDP-2 (Nikko Chemicals).

  And by blending these specific silicone surfactants and specific alkyl ether phosphoric acid, the skin feels fresh and sticky during use and after use, and it is moist after use. Feels soft and soft to the skin. Such an effect is specifically exhibited by the combination of specific surfactants of the present invention. Such an effect cannot be obtained with other surfactants, conventional humectants, oils, and the like.

It is preferable that the compounding quantity of the said silicone type surfactant is 0.05-2 mass% in cosmetics. Moreover, it is preferable that the compounding quantity of the said alkyl ether phosphoric acid is 0.005-2 mass% in cosmetics. The effect of the present invention is reduced if the amount of each compound is too small or too large.
Most of the aqueous skin cosmetic of the present invention is water, and is preferably 75% by mass or more, more preferably 80% by mass or more in the cosmetic. If the amount of water is too small, a large amount of other components will be blended, and it may be difficult to obtain the effect of the present invention that provides both a refreshing feeling and a moist feeling.

  In the present invention, the above-mentioned essential components are blended with water to make a transparent or translucent cosmetic, but other components that can be blended with a normal cosmetic can be blended within a range that does not impair the effects of the present invention. it can. For example, lower alcohols, moisturizers, water-soluble polymers, pH adjusters, preservatives, antioxidants, chelating agents, whitening agents, UV absorbers, oils, vitamins, amino acids, other various medicinal ingredients, powders, perfumes , Coloring materials, surfactants and the like. If the alkyl ether phosphoric acid is difficult to dissolve transparently or translucently, a lower alcohol such as ethanol may be used. The lower alcohol is usually 3% by mass or more, preferably 10% by mass or more in the cosmetic.

Moisturizers include polyethylene glycol, propylene glycol, glycerin, 1,3-butylene glycol, xylitol, sorbitol, maltitol, chondroitin sulfate, hyaluronic acid, mucoitin sulfate, caronic acid, atelocollagen, cholesteryl-12-hydroxystearate, lactic acid Examples thereof include sodium, bile salt, dl-pyrrolidone carboxylate, short-chain soluble collagen, diglycerin (EO) PO adduct, Isaiyobara extract, yarrow extract, and merirot extract.
Although the moisturizing feeling after use can be enhanced by blending such a moisturizing agent, if it is blended in a large amount, it becomes sticky and the refreshing feeling is impaired. Therefore, when a moisturizer is blended in the cosmetic of the present invention, the blending amount is preferably 20% by mass or less, more preferably 15% by mass or less.

Moreover, when mix | blending water-insoluble components, such as oil, it is suitable to set it as less than 15 mass% in cosmetics. When it is blended in an amount of 15% by mass or more, it is difficult to obtain a transparent or translucent cosmetic, and even if it is obtained, it becomes sticky due to the oil or a surfactant for blending it, and the refreshing feeling is impaired. In the present invention, a moist feeling after use can be obtained even if the oil is not substantially blended.
In addition, when the viscosity of the cosmetic is increased by blending with water-soluble polymers, it not only impairs the refreshing feeling but also causes stickiness, so it is better to avoid these blends. The viscosity of the cosmetic is preferably 2.5 mPa · s (22 ° C.) or less.

The product form of the aqueous skin cosmetic of the present invention is not particularly limited, and examples thereof include cosmetic liquid, body lotion, shaving lotion and the like in addition to skin lotion.
Hereinafter, the present invention will be further described with specific examples, but the present invention is not limited thereto. In the present invention, the blending amount is expressed in mass% unless otherwise specified. The test method used in the present invention is as follows.

[Sensory evaluation of feeling of use]
A questionnaire was conducted by 20 professional panelists on “fresh feel”, “non-sticky feel” during and after use, and “moist feel” and “soft skin feel” after use. Judgment was made as follows according to the number of panelists with good touch.
◎: 18 to 20 panelists who answered good ○: 15 to 17 panelists who answered good △: 10 to 14 panelists who answered good ×: 0 to 9 panelists who answered good

Test Example 1 Effect of combined use A lotion was prepared according to the formulation shown in Table 1 below, and the feel of use was evaluated.
When diPOE (2) alkyl ether phosphate or silicone surfactant is not blended (sample 5), the moist feeling and softness of the skin after use is lacking, and the amount of moisturizer is increased (sample 6). The moist feeling after use is improved, but stickiness is produced and a refreshing feeling cannot be obtained.
Even when only diPOE (2) alkyl ether phosphoric acid or only a silicone surfactant is blended (samples 3 to 4), the moist feeling and softness of the skin after use are insufficient.
On the other hand, when diPOE (2) alkyl ether phosphate and silicone surfactant are blended (Samples 1 and 2), the skin after use is still refreshing and non-sticky. Excellent effect in moist feeling and softness.

Test Example 2 Silicone surfactant HLB
Table 2 shows the results of lotions using diPOE (2) alkyl ether phosphoric acid and various HLB silicone surfactants.
When the HLB of the silicone-based surfactant exceeded 13 (Sample 10), stickiness was generated and the refreshing feeling was lowered, and the moist feeling of the skin was also lowered. When HLB is smaller than 11 (sample 11), it is difficult to blend into an aqueous cosmetic because of its low solubility, and it is necessary to further blend an active agent for blending. This is not desirable because
On the other hand, when a silicone surfactant having an HLB of 11 to 13 is used (Samples 7 to 9), a refreshing feeling without stickiness and a moist and soft feel after use. However, it was possible to obtain a lotion that was compatible.

Test Example 3 DiPOE (2) alkyl ether phosphate and other nonionic surfactants Table 3 shows other nonionic surfactants of HLB11-13 instead of silicone surfactants of HLB11-13 It is a result at the time of using.
As can be seen from Table 3, even when other nonionic surfactants are used in combination with di-POE (2) alkyl ether phosphate, the skin feels smooth and soft after use, and the skin feels soft and soft. It was not possible to obtain a lotion compatible with Sato.

Test Example 4 Silicone-based surfactant and other surfactants Table 4 shows the results when other POE alkyl ether phosphoric acid and POE alkyl ether acetic acid were used instead of di-POE (2) alkyl ether phosphoric acid. is there.
As can be seen from Table 4, only diPOE (2) alkyl ether phosphoric acid can provide a lotion that has both a refreshing feel without stickiness and a moist and soft skin after use. Met.
From the above results, it is considered that the effect of the present invention is specifically exhibited by using diPOE (2) alkyl ether phosphoric acid and HLB 11-13 silicone surfactant in combination.

Test Example 5 Blending amount of silicone surfactant As shown in Table 5, it was recognized that the effect of the present invention was lowered when the blending amount of the silicone surfactant was too large or too small. In order to exert the effect of the present invention, the blending amount of the silicone surfactant is preferably 0.05 to 2% by mass, more preferably 0.1 to 1% by mass in the cosmetic.

Test Example 6 Blending amount of diPOE (2) alkyl ether phosphoric acid As shown in Table 6, the effect of the present invention tends to decrease even if the blending amount of diPOE (2) alkyl ether phosphoric acid is too large or too small. Was recognized. In order to exert the effect of the present invention, the blending amount of diPOE (2) alkyl ether phosphoric acid is preferably 0.005 to 2% by mass, more preferably 0.01 to 1% by mass in the cosmetic. It is.

Hereinafter, formulation examples of the aqueous skin cosmetic of the present invention will be shown.
Formulation Example 1 Transparent lotion A. DiPOE (2) alkyl ether phosphoric acid 0.1% by mass
Dimethicone copolyol 0.5
Ethanol 5.0
Methyl paraben Appropriate amount Perfume Trace amount B. 1,3-butylene glycol 1.0
Dipropylene glycol 3.0
Peonies extract 0.5
Oat extract 0.05
Sodium pyrrolidonecarboxylate 0.5
Cypress extract 0.1
Tencha extract 0.3
Loquat extract 0.5
Beech bud extract 0.1
Nicotinamide 0.3
Glycerin 1.0
Citric acid appropriate amount Sodium citrate appropriate amount Edetic acid salt appropriate amount Purified water Residual (Production method)
The alcohol phase of A was added to the aqueous phase of B and solubilized to obtain a transparent lotion.

Formulation Example 2 Translucent Lotion A. DiPOE (2) alkyl ether phosphoric acid 0.5% by mass
Dimethicone copolyol 0.5
Fragrance 0.05
B. 1,3-butylene glycol 2.0
C. Royal jelly extract 0.1
Arginine hydrochloride 0.05
Lumpuyan extract 0.5
Chamomile extract 0.1
Sodium pyrrolidonecarboxylate 0.5
Melissa extract 0.2
Ryoku tea extract 0.5
Dipotassium glycyrrhizinate 0.1
Ascorbic acid glucoside 2.0
Glycerin 1.0
PEG-30 0.5
Phosphoric acid appropriate amount Sodium phosphate appropriate amount Purified water Residue (Production method)
After mixing the A phase with the B phase, it was added to the C aqueous phase to obtain a translucent lotion.

Formulation Example 3 Translucent Lotion A. DiPOE (2) alkyl ether phosphoric acid 0.01% by mass
Dimethicone copolyol 0.5
POE (60) hydrogenated castor oil 0.6
Polyglyceryl diisostearate 0.2
Glyceryl tri-2-ethylhexanoate 0.3
Fragrance 0.05
B. 1,3-butylene glycol 0.5
Glycerin 1.2
C. Tranexamic acid 2.0
Marjoram extract 0.5
Fennel extract 0.3
Sodium pyrrolidonecarboxylate 0.5
Hamamelis extract 0.2
Fennel extract 0.1
Ages extract 0.1
Clara extract 0.5
Trimethylglycine 0.3
Citric acid appropriate amount Sodium citrate appropriate amount Purified water Residue (Production method)
After mixing the A phase with the B phase, it was added to the C aqueous phase to obtain a translucent lotion.

Formulation Example 4 Two-layer lotion A. DiPOE (2) alkyl ether phosphoric acid 1.0 mass%
Dimethicone Copolyol 1.0
Ethanol 15.0
Methylparaben 0.1
Mentor 0.05
Dibutylhydroxytoluene 0.001
Pyridoxine 0.005
POE (60) glyceryl monoisostearate 0.5
Perfume appropriate amount Propylene glycol 1.0
Allantoin 0.2
Sodium chloride 0.1
Bentonite 1.0
Talc 0.5
Cellulose powder 0.5
Silica 1.0
Zinc oxide 0.5
Guar gum 0.5
Sodium chondroitin sulfate 0.1
Lactic acid 0.1
Lactic acid soda 0.05
Sodium hydroxymethoxybenzophenone sulfonate 0.1
Hexametaphosphate appropriate amount Purified water Residue (Production method)
The alcohol phase of A was added to the aqueous phase of B in which the powder component was well stirred and dispersed, and the mixture was stirred and mixed to obtain a solid-liquid two-layer lotion.

Formulation Example 5 Lotion-impregnated sheet mask DiPOE (2) alkyl ether phosphoric acid 0.1% by mass
Dimethicone copolyol 0.5
Ethanol 5.0
Methyl paraben Appropriate amount Perfume Trace amount B. 1,3-butylene glycol 1.0
Dipropylene glycol 3.0
Peonies extract 0.5
Sodium pyrrolidonecarboxylate 0.5
Cypress extract 0.1
Tencha extract 0.3
Loquat extract 0.5
Beech bud extract 0.1
Nicotinamide 0.3
Glycerin 1.0
Citric acid appropriate amount Sodium citrate appropriate amount Edetate appropriate amount Purified water Residue (Production method)
The alcohol phase of A was added to the aqueous phase of B and solubilized to obtain a lotion. This was further impregnated into a nonwoven fabric or cotton to obtain a lotion-impregnated sheet-like mask.

Claims (1)

A transparent to translucent aqueous solution comprising 0.05 to 2 % by mass of polyether-modified silicone of HLB 11 to 13 and 0.005 to 2 % by mass of dipolyoxyethylene (2) alkyl ether phosphoric acid Skin cosmetics.