JP2000086434A - Cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a cosmetic whcih stabilizes the skin or hair cosmetic system and can prevent the smooth touch on using or rinsing from deteriorating with time by including a highly polymerized polyethylene glycol, a water-soluble reducing agent and water. SOLUTION: The cosmetic for preferably skin is obtained by including (A) 0.001-5 wt.% of a highly polymerized polyethylene glycol, (B) 0.001-1 wt.% of a water-soluble reducing agent and (C) water preferably in a proportion of 0.1-99.9 wt.% based on the whole composition. One or more than two kinds selected from hydrogensulfite, sulfite, thiosulfite or thioglycolate are favorable as the component B. This cosmetic is preferably a shampoo or a one pack type cosmetic for hair. It is favorable that the component A has an average molecular weight of 400,000-7,000,000. On this cosmetic, water-soluble polymers, gelling agents such as a natural gum and the like, polyhydric alcohols, moisturizers such as a mucopolysaccharide and the like, higher alcohols, antioxidants or the like can be blended.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cosmetic, and more particularly, to a cosmetic comprising a highly polymerized polyethylene glycol to provide a smooth feel, a slippery feeling on the skin during use and a finger passing property of the hair. The present invention relates to a cosmetic which is good and does not have a smooth feel over time even under high temperature conditions.

[0002]

2. Description of the Related Art Conventionally, cosmetics for skin and hair have a smooth feel, improve slipperiness on the skin in use and finger penetration properties of the hair, and are also washable hair cosmetics. Various types of polymers have been studied for the purpose of improving finger fingering of hair during rinsing. Among them, high-polymerized polyethylene glycol can impart spinnability and specific viscosity to the system, and can impart a smooth feel to cosmetics for skin and hair due to this property. Have been done.

[0003]

However, when high-polymerized polyethylene glycol is blended into cosmetics, the spinnability and viscosity decrease over time, especially under high-temperature conditions or light irradiation conditions, so that it is easy to use during use. The smooth feel at the time tends to be lost, and there is a problem in stability. To prevent this, various additives such as antioxidants such as urea and BHT, chelating agents such as EDTA, and alcohols such as ethanol and propylene glycol have been studied and used. The development of a highly polymerized polyethylene glycol-containing cosmetic that has not been obtained and has higher stability over time has been desired.

[0004]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above-mentioned problems, and as a result, formulated a specific amount of a water-soluble reducing agent into a cosmetic containing water and a specific amount of a high-polymerized polyethylene glycol. By doing so, the present inventors have found that it is possible to stabilize the system of cosmetics for skin and hair and to prevent a decrease in smooth feel over time when rinsing during use, and to complete the present invention based on this finding. Was.

That is, the present invention provides the following components (A) to
(C), (A) Highly polymerized polyethylene glycol 0.001 to 5
(B) 0.001 to 1% by weight of a water-soluble reducing agent (C) water.

Hereinafter, the present invention will be described in detail. The highly polymerized polyethylene glycol as the component (A) used in the present invention has an effect of imparting spinnability to a cosmetic system, and may give a specific viscosity when the blending amount is large. The spinnability and the viscosity inherent in highly polymerized polyethylene glycol give the skin and hair cosmetics a smooth feel, and as a result, when applied to the skin, improve the slipperiness on the skin. When applied to the hair, it improves finger fingering of the hair, and in the case of a hair product for rinsing, it improves finger fingering during rinsing. However, on the other hand, the solution of the component (A) has a tendency that its spinnability and viscosity decrease with time under high-temperature conditions or light irradiation conditions, thereby giving a smooth feel when rinsing or rinsing during use of the cosmetic. Also tend to be lost. The present invention solves this drawback by using a component (B) described later.

In the present invention, the high molecular weight polyethylene glycol of the component (A) preferably has an average molecular weight in the range of 100,000 to 10,000,000, particularly preferably in the range of 400,000 to 7,000,000. If the average molecular weight is less than 100,000, it is difficult to sufficiently obtain a smooth feel. Polyox WSR series (manufactured by Union Carbide) as the highly polymerized polyethylene glycol of the component (A) in the present invention,
Commercial products such as Alcox E series and Alcox R series (manufactured by Meisei Chemical Industry Co., Ltd.) can be used.

In the present invention, the highly polymerized polyethylene glycol as the component (A) may be used alone or in combination of two or more having different average molecular weights, if necessary. ~ 5% by weight (hereinafter, weight%
Is simply indicated by%), and preferably 0.005 to 0.5.
5%. If the amount is less than 0.001%, a sufficient smooth feel cannot be obtained. If the amount exceeds 5%, the excessive amount of the component (A) causes the skin or the hair to become sticky, give a feeling of sticking, etc. Stickiness, stickiness, stiffness, etc. may remain. In addition, the stability of the system may be adversely affected.

The component (B) used in the present invention is a water-soluble reducing agent. In the cosmetic of the present invention, when this component is used in combination with highly polymerized polyethylene glycol and water, for example, even under high temperature conditions, etc. The spinnability and viscosity of the highly polymerized polyethylene glycol can be kept stable over time, and a decrease in smoothness during rinsing during use of the cosmetic can be prevented. As the water-soluble reducing agent of the component (B) used in the present invention, any water-soluble and reducing agent can be used, and examples thereof include bisulfite, sulfite, thiosulfate, thioglycolate, and thioglycolate. Glycolic acid, cysteine, cysteine derivatives and the like can be exemplified, but bisulfite, sulfite, thiosulfate and thioglycolate are preferred. Examples of the salt include a sodium salt, a potassium salt, a calcium salt, an ammonium salt, an ethanolamine salt and the like. Of these, particularly preferred examples include sodium bisulfite, sodium sulfite, sodium thiosulfate, and thioglycolic acid monoethanolamine salt.

In the present invention, the water-soluble reducing agent of the component (B) can be used singly or in combination of two or more, and the compounding amount is 0.001 to 1% of the whole composition. Preferably it is 0.005 to 0.2%. If the amount is less than 0.001%, the sufficient effect of the invention cannot be obtained,
If it exceeds 1%, the quality of the product may be impaired.

In the present invention, the water of the component (C) is
It is a solvent for the highly polymerized polyethylene glycol as the component and the water-soluble reducing agent as the component (B), and is an essential component. The water as the component (C) can be used as long as it can be blended with ordinary cosmetics, and purified water is particularly suitable. The compounding amount of the component (C) in the present invention may be any amount that can dissolve the components (A) and (B), and the most suitable amount is compounded according to the dosage form of the product. In order to further improve the slipperiness and finger penetration of the hair, 0.1 to 99.9 of the total composition
% Is preferred.

The cosmetic of the present invention comprises, in addition to the above essential components,
Gelling agents such as water-soluble polymers and natural gums in a quantitative and qualitative range that do not impair the effects of the present invention depending on the purpose; humectants such as polyhydric alcohols and mucopolysaccharides; lower alcohols such as ethanol; Cationic surfactants such as quaternary ammonium salts; Nonionic surfactants such as polyoxyethylene addition type, alkylolamide type, sugar derivative type; higher fatty acid salt type, N-acyl amino acid salt type, N-acylmethyl taurine salt Surfactants, such as anionic surfactants, alkyl ether sulfates, etc .; amphoteric surfactants, such as imidazoline type, alkyl betaine type, amido betaine type, sulfobetaine type; hydrocarbon oils, ester oils, triglycerides, natural fats and oils,
Oils such as silicones; higher alcohols; antioxidants; preservatives, bactericides; chelating agents such as edetates;
PH adjusters such as citrate, lactic acid, lactate, malic acid, malate, and phosphate-based pH buffers; feel improvers such as organic powders and inorganic powders; scrubbing agents such as shell particles; Colorants such as pigments and pearlescent agents; fragrances; ultraviolet absorbers; and other components commonly used in cosmetics such as skin and hair cosmetics can be blended.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The cosmetic preparation of the present invention is not particularly limited in its dosage form as long as it contains the above essential components.
It can be carried out in any of liquid, emulsion, gel, cream and suspension. It can also be filled in an aerosol container together with a propellant and used in the form of a spray or foam. The products include facial skin care products, make-up products, body care products, hand and foot care products, cleansing products, bath cosmetics and other skin cosmetics, and hair cosmetics, especially shampoo or one-part hair cosmetics. It can be suitably applied to a hair rinse, a hair conditioner, a hair pack, a hair styling spray, a hair styling mousse, a hair styling gel, a hair liquid, a hair treatment, a hair cream, a hair color, and the like.

Among the cosmetics of the present invention, in particular, regarding the cosmetic for hair, a hair cosmetic which requires at least two treatments such as a treatment with a reducing agent and a treatment with an oxidizing agent, such as a perm, is required. However, the present invention can be suitably applied to a one-pack type hair cosmetic. That is, in the present invention, the water-soluble reducing agent is intended to prevent a drop in smooth feel during rinsing during use of the cosmetic by keeping the spinnability and viscosity of the highly polymerized polyethylene glycol stable under high temperature conditions and over time. Since no further treatment is necessary for the hair after application, the purpose of use can be completed with one agent.

[0015]

EXAMPLES The present invention will be described in more detail with reference to the following Examples, which should not be construed as limiting the invention thereto.

Examples 1 to 6 and Comparative Examples 1 to 3: Hair Conditioner A hair conditioner was prepared according to the compositions shown in Tables 1 and 2 below and the following production method, and had a spinnability, a smooth feel during use, and rinsing. Was evaluated for the stability with time for each of the smooth feelings. Tables 1 and 2 also show the results.

[0017]

[Table 1]

[0018]

[Table 2]

(Production method) A: Components (1) to (3) are uniformly heated and dissolved. B: Components (4) to (11) and (13) are uniformly heated and dissolved, to which A is added and emulsified and mixed. C: After cooling B, component (12) was added, mixed and filled into a container to obtain a hair conditioner.

(Evaluation Method) Examples 1 to 6 and Comparative Example 1
After leaving each of samples 3 to 4 in a thermostat at 5 ° C. and a thermostat at 50 ° C. for 4 weeks as an accelerated test for evaluating high-temperature stability or stability over time, each sample was placed on a specialized panel of 10 persons. The hair was distributed and used, and the degree of change in the spinnability and the degree of change in the smoothness of the hair during use or rinsing (ease of finger passing) were evaluated. 5 ℃
4 points when the 50 ° C. sample did not change at all, compared with the sample, and 3 points when the sample did not change much.
Points and those having a change were evaluated as two points, those having a large degree of change were evaluated as one point, and the average point was determined as follows. (Average point) ：: 3.5 points or more ○: 3.0 points or more and less than 3.5 points Δ: 2.0 points or more and less than 3.0 points ×: less than 2.0 points Obtained from the above evaluation and judgment methods. Table 1 and Table 2
Shown in

As is clear from the results in Tables 1 and 2, the hair conditioner of the present invention has a lower spinnability and a smoother feel during use or rinsing as compared with those of Comparative Examples 1 to 3. It was proved that there was little loss and an effect with excellent stability over time was obtained.

Example 7: Cream (ingredient) (% by weight) (1) Beeswax 6 (2) Cetanol 5 (3) Reduced lanolin 5 (4) Squalane 10 (5) Glyceryl monostearate 2 (6) Polymonolaurate Oxyethylene sorbitan (20E.O.) 2 (7) Preservative 0.1 (8) Dipropylene glycol 15 (9) Highly polymerized polyethylene glycol (Note 2) 0.1 (10) Sodium thiosulfate 0.03 (11 ) Fragrance 0.1 (12) Purified water 54.67 Note 2: Same as in Example 1 (average molecular weight 2,000,000)

(Production method) A: Components (1) to (7) are heated and mixed to 70 ° C. B: Components (8) to (10) and (12) are heated and mixed to 70 ° C. C: After adding B to A, cool, add component (11) and mix uniformly. D: C was filled in a container to obtain a cream. The cream of Example 7 had good smoothness during use, and showed good stability without a decrease in smoothness over time.

Example 8: Facial Cleanser (Component) (% by weight) (1) Sodium N-lauroylglutamate 20 (2) Glycerin 15 (3) Polyethylene glycol 400 15 (4) Palm oil fatty acid diethanolamide 3 (5) Lanolin 1 (6) Sodium bisulfite 0.03 (7) Highly polymerized polyethylene glycol (Note 3) 0.005 (8) Preservative 0.1 (9) Fragrance 0.1 (10) Purified water 45.765 Note 3: Polyox WSR-303 (average molecular weight: 7,000,000) (manufactured by Union Carbide Co., Ltd.)

(Production method) A: Components (1) to (5) are heated and mixed to 70 ° C. B: Components (6) to (8) and (10) are mixed and dissolved. C: Add B to A, mix and cool, add component (9) and mix uniformly. D: C was filled in a container to obtain a face wash. The face wash of Example 8 had good smoothness during rinsing during use, and good stability with no decrease in smoothness over time.

Example 9: Hair styling gel (Component) (% by weight) (1) Carboxyvinyl polymer 0.5 (2) Polyvinylpyrrolidone 3 (3) Glycerin 1 (4) Sodium hydroxide 0.1 (5) Ethanol 20 (6) Polyoxyethylene dodecyl ether (10E.O.) 0.2 (7) Sodium hydrogen sulfate 0.03 (8) Highly polymerized polyethylene glycol (Note 4) 5 (9) Preservative 0.1 (10) Perfume 0.2 (11) Purified water 69.87 Note 4: Polyox WSR N-3000 (average molecular weight 400,000) (manufactured by Union Carbide Co., Ltd.)

(Preparation method) A: Component (1) is uniformly mixed with a part of component (11). B: Components (2), (3), and a part of component (11)
(7) and (8) are uniformly mixed by heating. C: Components (5), (6), (9) and (10) are mixed and dissolved. D: The component (4) is mixed and dissolved in the rest of the component (11). E: C is added to D, mixed and dissolved, and A and B are further added and mixed uniformly. F: E was filled in a container to obtain a hair styling gel. The hair styling gel of Example 9 had smooth finger passage during use, good usability, and good stability in which finger passage was maintained over time.

Example 10: Shampoo (Component) (% by weight) (1) Sodium polyoxyethylene lauryl ether sulfate 20 (2) Coconut oil fatty acid amidopropyl betaine 5 (3) Cationic polymer (Note 5) 0.3 ( 4) Highly polymerized polyethylene glycol (Note 6) 0.1 (5) Monoethanolamine salt of thioglycolic acid 0.01 (6) Preservative 0.2 (7) Fragrance 0.3 (8) Purified water 74.09 Note 5: Polymer JR400 (manufactured by Union Carbide Co.) Note 6: Same as in Example 1 (average molecular weight 2,000,000)

(Preparation method) A: Components (1) to (8) are uniformly heated and mixed at 70 ° C.
Cool later. B: A was filled in a container to obtain a shampoo. The shampoo of Example 10 had good smoothness and good usability during washing, and had good stability without deterioration in smoothness over time.

Example 11: Oil cleansing (Component) (% by weight) (1) Liquid paraffin 20 (2) Polyoxyethylene oleyl ether (7E.O.) 8 (3) Perfume proper amount (4) Preservative proper amount (5) ) Sodium bisulfite 0.005 (6) Highly polymerized polyethylene glycol (Note 7) 0.001 (7) Propylene glycol 0.02 (8) Purified water 0.1 (9) Glyceryl tri-2-ethylhexanoate Remaining amount Note 7: Same as Example 8 (average molecular weight: 7,000,000)

(Preparation method) A: Components (1) to (4) and (9) are uniformly mixed at room temperature. B: Components (5) to (8) are dissolved by heating and added to A and mixed. C: B was filled in a container to obtain oil cleansing. The oil cleansing of Example 11 had a good smoothness on the skin during the cleansing operation, could enhance the cleansing effect, and had good stability without a decrease in the smoothness over time. Was.

[0032]

As described in detail above, the cosmetic of the present invention has a smooth feel, has a good slippery feeling on the skin during use, and has good finger rubbing properties of the hair, and can be used under high temperature conditions. Also exhibit an excellent effect that the smooth feel does not decrease over time, and have excellent quality as a cosmetic.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4C083 AA082 AB032 AB051 AB351 AB352 AC022 AC072 AC102 AC122 AC182 AC422 AC442 AC532 AC642 AC662 AC682 AC692 AC712 AC771 AC772 AC782 AD041 AD042 AD072 AD092 AD132 CC01 CC02 CC06 CC31 CC32 DD33 CC38 DD EE01 EE06 FF05

Claims (4)

[Claims] 1. The following components (A) to (C): (A) highly polymerized polyethylene glycol 0.001 to 5
(B) 0.001 to 1% by weight of a water-soluble reducing agent (C) water. 2. The cosmetic according to claim 1, wherein the water-soluble reducing agent is one or more selected from bisulfite, sulfite, thiosulfate, and thioglycolate. 3. The cosmetic according to claim 1, wherein the cosmetic is a cosmetic for skin.
Or the cosmetic according to 2. 4. The cosmetic according to claim 1, wherein the cosmetic is a shampoo or a one-part type cosmetic for hair.