JPH11263707A - Keratin remover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a keratin remover which shows excellent massage effect and keratin removal effect, gives moist touch to skin after being used, possesses fine stability and is used by applying to skin and massaging the skin. SOLUTION: This remover contains (A) 0.001-3 wt.% of a keratin dissolution agent (e.g. salicylic acid), (B) 0.001-5 wt.%, of polyethylene glycol with an average molecular weight of 1000 or more and (C) 0.1-50 wt.% of a polyhydric alcohol (e.g. ethylene glycol) in liquid form at ordinary temperature.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a keratin removal material,
More specifically, it is a type of exfoliating agent that is applied to the skin and rubbed, and has excellent massage and exfoliating effects,
The present invention relates to an exfoliating agent that imparts a moist feeling to skin after use and has good stability.

[0002]

2. Description of the Related Art Conventionally, as a keratin remover for removing keratin of aged skin and smoothing the skin, aging keratin is hard to hardened.
Known are those that are physically removed, such as rubbing off with a soft scrubbing agent, or rubbing off with the gomage effect of a peeling agent, or those that chemically dissolve senescent keratin by incorporating sulfur, thioxolone, salicylic acids, resorcinol, etc. Have been.

[0003]

However, when a scrubbing agent or a peeling agent is used, although there is an effect of removing keratin, the irritation may become too strong depending on the usage.
In some cases, exfoliation may be excessively removed, and there has been difficulty in use. In addition, when a keratolytic agent that chemically removes keratin is used, it is not possible to obtain a sufficient keratin-removing effect by simply applying it, or the keratolytic agent does not stay in the keratinous part of the skin and drips off. In some cases, it was damaged.
In particular, when an acidic substance such as salicylic acid is used as a keratolytic agent, the pH of the product system decreases, so that an appropriate viscosity can be obtained by an alkali-thickening type water-soluble polymer that is widely used as a thickener. It was difficult, and in this case, it was also difficult to secure the stability of the product. In addition, excellent quality as a keratin removal agent has not yet been obtained, for example, the skin after use tends to be bulky and unpleasant in feel. Therefore, development of a more improved exfoliating agent in these respects has been desired.

[0004]

Under these circumstances, the present inventors have conducted intensive studies in order to solve the above-mentioned problems, and as a result, the keratolytic agent, polyethylene glycol having a specific molecular weight, and a polyhydric alcohol which is liquid at ordinary temperature have been used. By combining a specific amount, it has been found that a superior exfoliating effect of massage and aging keratin, a moisturized skin feel after use, and a good exfoliating agent with good stability can be obtained based on these findings. The present invention has been completed.

That is, the present invention provides the following components (A) to
(C), (A) keratolytic agent 0.001 to 3% by weight (B) Polyethylene glycol having an average molecular weight of 1000 or more 0.001 to 5% by weight (C) Polyhydric alcohol liquid at room temperature 0.1 to 50 It is a keratin removal material characterized by containing by weight.

Hereinafter, the present invention will be described in detail. The keratolytic agent of the component (A) used in the present invention softens aging keratin,
It is an essential component for imparting the effect of dissolving and removing. These are not particularly limited as long as they are usually used in cosmetics and the like as a keratolytic agent, and specific examples thereof include sulfur, thioxolone, salicylic acid or derivatives thereof, and resorcin. Among them, in the present invention, salicylic acid is particularly preferable for obtaining good product quality, such as having an excellent keratolytic effect. As the salicylic acid, any of those extracted from plants and those obtained by chemical synthesis can be used, and the production method thereof is not limited.

In the present invention, the compounding amount of the keratolytic agent of the component (A) is in the range of 0.001 to 3% by weight (hereinafter, unless otherwise specified, the weight% is simply indicated by%) in the whole composition. And more preferably 0.05 to 1%. 0.0
If it is less than 01%, a sufficient effect of removing aging keratin cannot be obtained, and if it exceeds 3%, the keratin dissolving action becomes excessive and may adversely affect the skin.

[0008] The polyethylene glycol (B) used in the present invention has a stable thickening effect even in an acidic region. For example, the polyethylene glycol stays at a use site while maintaining an appropriate viscosity even in a low pH region such as pH 3-4. It has the effect of preventing dripping and giving a good massage effect. As a result, the keratolytic agent of the component (A), in particular, the keratolytic effect of salicylic acid is sufficiently exhibited, and a good keratin-removing effect can be obtained. However, polyethylene glycol which exerts such an effect has an average molecular weight of 1,000 or more. Things. Polyethylene glycol having an average molecular weight of 1,000 or more usually has an average molecular weight of 10 as a raw material for cosmetics.
Those having an average molecular weight in the range of 8,000 to 2,000,000 are particularly preferable for obtaining the effects of the present invention. If the average molecular weight is less than 1,000, it is difficult to obtain a sufficient massage effect.

[0009] The polyethylene glycol of the component (B) includes PEG1000, PEG2000, PEG400.
0, PEG6000, PEG10000, PEG200
Commercial products such as 00 (manufactured by Daiichi Kogyo Seiyaku), Polyox WSR series, (manufactured by Union Carbide), Alcox E series, and Alcox R series (manufactured by Meisei Chemical Industry) can be used.

In the present invention, polyethylene glycol as the component (B) may be used alone or in combination of two or more, if necessary.
It is 1-5%, more preferably 0.01-1%. 0.
If it is less than 001%, the exfoliating effect due to a sufficient massage effect cannot be obtained, and if it exceeds 5%, it tends to be sticky and difficult to massage.

The polyhydric alcohol which is liquid at room temperature of the component (C) used in the present invention can significantly improve the massage effect and the exfoliating effect by being combined with the specific molecular weight polyethylene glycol of the component (B). Moreover, it has the effect of giving a moist feeling to the skin after use and not bulking the skin.

The polyhydric alcohol of the component (C) used in the present invention is not particularly limited as long as it is a normal temperature liquid polyhydric alcohol which can be generally used for cosmetics. Specific examples include ethylene glycol, diethylene glycol, and triethylene. Examples thereof include glycol, propylene glycol, dipropylene glycol, glycerin, diglycerin, 1,3-butylene glycol, and polyethylene glycol having an average molecular weight of 600 or less. In the present invention, propylene glycol, dipropylene glycol, glycerin, diglycerin and 1,3-butylene glycol are particularly preferred.

In the present invention, the polyhydric alcohol of the component (C) may be used alone or in combination of two or more, if necessary.
%, More preferably 1 to 20%. If it is less than 0.1%, a sufficient exfoliating effect and moist feeling cannot be imparted to the skin after use, and if it exceeds 50%, the feeling of use becomes sticky and the massage tends to be difficult.

In the exfoliating agent of the present invention, in addition to the above essential components, a lower alcohol such as ethanol as a solvent;
Purified water can be used, and furthermore, depending on the purpose, in a quantitative and qualitative range that does not impair the effects of the present invention, hydrocarbon oils, triglycerides, ester oils, natural fats and oils, lanolins,
Oily components such as silicone oil; natural shell particles, inorganic extender pigments,
Powders such as cellulose powder, nylon powder, and silicone resin powder; surfactants; ultraviolet absorbers; antioxidants; preservatives; chelating agents;
Other components usually used in cosmetics such as an electrolyte, a coloring agent, a fragrance, and a cosmetic component for skin can be appropriately compounded as needed.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION The exfoliating agent of the present invention is used by applying it to the skin and rubbing it, and it can be used in various dosage forms such as viscous liquid, emulsion, cream and gel. . In addition, the keratin removal material of the present invention is impregnated into a nonwoven fabric, cloth, paper, or the like and formed into a sheet, and the keratin portion of the skin can be more easily removed by rubbing the keratin portion of the skin. The exfoliating material of the present invention can be used on any part of the body such as the face, hands, arms and feet.

[0016]

The present invention will be further described with reference to the following examples. These do not limit the present invention at all. Examples 1 to 12 and Comparative Examples 1 to 6 Exfoliating agent (cream) A creamy exfoliating agent was prepared according to the composition shown in Table 1 and the following method, and a sample usable as a product was used. The massage effect, the exfoliating effect, the moist feeling after use, and the stability of the system were evaluated. The results are shown in Tables 1 and 2.

[0017]

[Table 1]

[0018]

[Table 2]

(Production method) A. Components (1) to (4) are heated and mixed. B. The components (5) to (8) and (11) to (18) are heated and mixed. C. Add A to B and emulsify. D. Add components (9) and (10) to C and mix. E. FIG. D was filled in a container to obtain a keratin removal material.

(Evaluation and Judgment Methods) Samples of Examples 1 to 12 and Comparative Examples 1 to 6 were prepared, and 30
The homogeneity of the system after minutes was evaluated, and (a) the stability was judged according to the judgment criteria. Of these, the samples of Examples 1 to 12 and Comparative Examples 2 to 6 that could be used as products were
Named professional panel, and evaluated each item of massage effect at the time of use, exfoliation effect and moist feeling of skin 30 minutes after use using the following (b) evaluation criteria, using 7 grades. Was. Thereafter, the average value of the scores of each sample was determined using (c) the criterion.

Evaluation Items <1> Stability (Evaluation of System Uniformity 30 Minutes After Sample Preparation) (A) Judgment Criteria (Evaluation): (Judgment) Uniform: Almost uniform: ○ Non-uniform: Δ Separation: × <2> Massage effect <3> Exfoliating effect <4> Moist feeling of skin 30 minutes after use (b) Evaluation criteria (Score): (Evaluation) 6: Very good 5: Good 4: Good slightly 3: Normal 2: Slightly bad 1: Bad 0: Very bad (C) Judgment criteria (Score): (Judgment) 5.0 or more: 3.0 or more, less than 5.0: ○ 1.0 or more, 3.0 Less than: △ Less than 1.0: ×

As is clear from the results in Tables 1 and 2, the exfoliating agent of the present invention has a massage effect, an exfoliating effect, a moist feeling on the skin after use, It was proved that each of the items of system stability exhibited an excellent effect.

Example 13 Exfoliating material (non-woven fabric impregnated type) Exfoliating material (non-woven fabric impregnated type) was prepared by the following composition and manufacturing method. (Composition) (Component) (% by weight) (1) Polyoxyethylene isostearate (50 mol) 0.3 (2) Ethanol 18 (3) Appropriate amount of fragrance (4) 1,3-butylene glycol 10 (5) Glycerin 5 (6) Polyethylene glycol (Note 5) 0.2 (7) Plant extract 1 (8) Salicylic acid 0.1 (9) Purified water Remaining amount Note 5: Same as Note 1 in Example 1

(Production method) A. Mix components (1)-(3). B. Components (4) to (9) are mixed. C. Add A to B and mix. D. The nonwoven fabric was impregnated with C and charged into a container to obtain a keratin removal material (nonwoven fabric impregnated type).

Since the exfoliating material of Example 13 obtained as described above is a sheet type, it is easy to massage the application site, and has excellent massage effect and exfoliating effect. Keep a moist feeling without
It showed an excellent effect.

[0025]

As described in detail above, the exfoliating agent of the present invention is excellent in massage effect and exfoliating effect, has an effect of giving a moist feeling to the skin after use, and has good stability. It has excellent quality as a exfoliating agent.

Claims (2)

[Claims] 1. The following components (A) to (C): (A) keratolytic agent 0.001 to 3% by weight (B) 0.001 to 5% by weight of polyethylene glycol having an average molecular weight of 1000 or more (C) A keratin removal agent comprising 0.1 to 50% by weight of a polyhydric alcohol liquid at room temperature. 2. The exfoliating agent according to claim 1, wherein the exfoliating agent (A) is salicylic acid.