JP2000103727A - Cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a cosmetic having an excellent moisture retaining effect, improved compatibility with skin, no sticky feeling, providing a smooth feeling after application, having an excellent feeling in use by using both a polyaspartate and a specific component. SOLUTION: This cosmetic comprises (A) a phospholipid (e.g. a hydrogenated phospholipid, or the like), (B) a polyaspartate (a polymer of L-aspartic acid, D-aspartic acid or heir mixture, or the like), (C) a liquid oil (e.g. a fatty acid such as oleic acid a hydrocarbon such as a liquid paraffin, an alcohol such as hexadecyl alcohol), (D) a water-soluble moisture retaining agent (a substance except the polyaspartate of the component B, for example, a polyol such as glycerol or an amino acid such as glycine) in the ratio of preferably 0.01-5 wt.% of the component A, 0.1-10 wt.% of the component B, 0.05-50 wt.% of the component C and 0.1-50 wt.% of the component D, and preferably further (E) cholesterol and/or phytosterol.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention has an excellent moisturizing effect,
The present invention relates to a cosmetic composition that has good skin familiarity, has no sticky feeling, and gives a smooth feeling to the skin after application.

[0002]

2. Description of the Related Art Conventionally, water-soluble polyhydric alcohols such as glycerin and propylene glycol, and water-soluble high-molecular substances such as mucopolysaccharide sodium hyaluronate have been used as moisturizing components to be incorporated into cosmetics. In recent years, blending of polyaspartate has been proposed as a humectant having excellent moisturizing power and hygroscopic power and high safety (Japanese Patent Application Laid-Open No. Hei 6 (1994)).
-157237).

[0003]

However, polyaspartate does not have a sufficient moisturizing effect. If it is blended in a large amount, polyaspartate may give an uncomfortable stickiness when applied to the skin, especially at the time of completion of application. However, there is a disadvantage that the feeling of use is impaired. When the above-mentioned water-soluble humectant is used in combination to supplement the moisturizing effect, the moisturizing effect is improved but the sticky feeling is further promoted. Accordingly, there has been a demand for the development of a cosmetic composition which has a good moisturizing effect, has good skin familiarity, has no sticky feeling, and has an excellent usability that imparts a smooth feel to the skin after application.

[0004]

Means for Solving the Problems In view of the above circumstances, the present inventors have conducted intensive studies and as a result, have found that the above problems can be solved by using polyaspartate and a specific component together. The invention has been completed. That is, claim 1 of the present invention is characterized by containing the following components (A) to (D): (A) phospholipid (B) polyaspartate (C) liquid oil (D) water-soluble humectant It is a cosmetic. Further, claim 2 of the present invention provides that the amount of the components (A) to (D) is
(A) 0.01 to 5% by weight, (B) 0.1 to 10% by weight, (C) 0.05 to 50% by weight, (D) 0.1 to 50% by weight.
% By weight. further,
Claim 3 of the present invention provides, in addition to the above components, component (E)
A cholesterol and / or phytosterol. The details will be described below.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION As the phospholipid of the component (A) used in the present invention, those obtained from egg yolk, soybean and the like can be mentioned, and hydrogenated phospholipid is preferably used. Commercial products include Resinol S-10 and S-1
0E (Nikko Chemicals), egg yolk lecithin PL-10
0P (manufactured by Kewpie Co., Ltd.) and the like.

The amount of component (A) is not particularly limited, but is preferably 0.01 to 5% by weight (hereinafter simply referred to as "%"), and more preferably 0.02 to 2% by weight.
%. By using in this range, a good feeling of use with reduced stickiness and an excellent moisturizing effect can be more effectively imparted.

The polyaspartic acid salt of the component (B) is obtained by polymerizing L-aspartic acid, D-aspartic acid or a mixture thereof, and has an average molecular weight of 1
000 to 100,000, more preferably 5,000 to 50,000 are suitably used. Examples of the salt include metal salts such as sodium and potassium, alkanolamine salts such as ammonium salts and triethanolamine salts, and organic weak base salts such as basic amino acid salts. Commercial products include Aqua Dew SPA-30 (manufactured by Ajinomoto Co.).

Although the amount of component (B) is not particularly limited, it is preferably 0.1 to 10%, more preferably
0.5 to 5%. By using in this range,
Good moisturizing feeling and smooth feeling are exhibited more.

The liquid oil of the component (C) is not particularly limited as long as it is a liquid oil which is liquid at room temperature, and those usually used in cosmetics can be used. Specifically, for example,
Fatty acids such as oleic acid and isostearic acid, hydrocarbon oils such as liquid paraffin, squalane and squalene, alcohols such as hexadecyl alcohol and oleyl alcohol, cetyl 2-ethylhexanoate, and palmitic acid
2-ethylhexyl, 2-octyldodecyl myristate, neopentyl glycol di-2-ethylhexanoate, glyceryl tri-2-ethylhexanoate, 2-octyldodecyl oleate, isopropyl myristate, glyceryl triisostearate, isostearin Ester oils such as isocetyl acid, olive oil, avocado oil, macadamia nut oil, vegetable oils such as jojoba oil, dimethylpolysiloxane, dimethylcyclopolysiloxane,
Silicone oils such as methylphenylpolysiloxane, methylhydrogenpolysiloxane, octamethylcyclotetrasiloxane, octamethylcyclopentasiloxane, and decamethylcyclopentasiloxane may be mentioned, and one or more of these may be appropriately used depending on the purpose. Can be selected and used.

The amount of component (C) is not particularly limited, but is preferably 0.05 to 50%, more preferably
0.1 to 30%.

The water-soluble humectant of the component (D) comprises the component (B)
Other than polyaspartate, specifically, glycerin, diglycerin, butylene glycol,
Dipropylene glycol, propylene glycol, polyols such as polyethylene glycol, glycine, alanine, valine, leucine, isoleucine, phenylalanine, tyrosine, threonine, serine, proline, hydroxyproline, tryptophan, thyroxine, methionine, cystine, cysteine, aspartic acid, Glutamic acid, asparagine, glutamine, lysine, arginine, amino acids such as histidine and salts thereof, hydroxyacetic acid, lactic acid, β-hydroxypropionic acid, α-hydroxybutyric acid, α-hydroxyisobutyric acid, α-hydroxyisocaproic acid, oxalic acid, Malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, fumaric acid, maleic acid, malic acid, tartronic acid, citric acid, tartaric acid And organic acids and salts thereof such as sodium salt, potassium salt, triethanolamine salt and ammonium salt, sugars such as maltitol and sorbitol and derivatives thereof, and the like, and one or more of these may be used. Can be.

The amount of component (D) is not particularly limited, but is preferably 0.1 to 50%, more preferably 1 to 50%.
３０30%.

[0013] In the cosmetic of the present invention, in addition to the above essential components, cholesterol and / or
Alternatively, by blending phytosterol, the moisturizing effect can be more remarkably exhibited. The amount of component (E) is not particularly limited, but is preferably 0.005 to 5
%, More preferably 0.01 to 2%.

[0014] The cosmetic of the present invention contains components to be added to ordinary cosmetics within a range not to impair the effects of the present invention, ie,
Oils, water, alcohols, powders,
Water-soluble polymers, film-forming agents, surfactants, oil-soluble gelling agents, organically modified clay minerals, resins, ultraviolet absorbers, preservatives,
Antibacterial agents, fragrances, antioxidants, pH adjusters, chelating agents and the like can be added.

The cosmetic of the present invention can be used as a skin care cosmetic such as a lotion, an emulsion, a cream, and a cleanser, and as a makeup cosmetic such as a foundation. Various forms such as cream, solid, multilayer and the like can also be selected.

[0016]

EXAMPLES The present invention will be described in more detail with reference to the following Examples, but it should not be construed that the invention is limited thereto.

Examples 1 to 4 and Comparative Examples 1 to 4 Emulsions Emulsions having the compositions shown in Tables 1 and 2 were produced and evaluated for their moisturizing effect and feeling of use.

[0018]

[Table 1]

[0019]

[Table 2]

(Production method) A: Components 1 to 7 are heated and uniformly mixed. B: Components 8 to 13 and 15 are heated and mixed uniformly. C: B is added to A and emulsified and mixed. D: C was cooled, and component 14 was added and mixed to obtain an emulsion.

(Evaluation method) A use test was performed by 15 professional evaluation panels, and the moist feeling and non-stickiness at the time of application, the moisturizing effect after application and the smoothness after application were evaluated on a 5-point scale according to the following criteria. It was determined. [Evaluation criteria] 5 points: Very good. 4 points: good. 3 points: Normal. 2 points: Somewhat poor. 1 point: defective. [Determination] ：: Average score of 4.5 or more ○: Average score of 3.5 or more and less than 4.5 Δ: Average score of 2.5 or more and less than 3.5 ×: Average score of less than 2.5 The results obtained from the evaluation method are shown in Tables 1 and 2.

As is clear from the evaluation results, Examples 1 to 4 according to the present invention were excellent in moisturizing effect, had no stickiness, had a smooth feeling, and had a good feeling in use. On the other hand, in the comparative example, a product satisfying both the moisturizing effect and the feeling of use was not obtained.

Example 5 Two-Layer Lotion (Component) (%) Hydrogenated soybean phospholipid 0.2 2. Squalane 1.0 3. 3. Sodium polyaspartate (Note 1) 2.0 Propylene glycol 5.0 5. Glycerin 5.0 6. Glycine 0.5 7. Ethanol 10.0 8. Sodium lactate 1.0 9. Preservative appropriate amount 10. Appropriate amount of fragrance 11. Remaining purified water (Note 1) Aqua Dew SPA-30 (30%; manufactured by Ajinomoto Co.)

(Production method) A: Components 1 and 2 are heated and uniformly mixed. B: Components 3 to 6, 8, 9 and 11 are heated and uniformly mixed. C: B is added to A and emulsified and mixed. D: C was cooled, and components 7 and 10 were added and mixed to obtain a two-layer type lotion. Example 5 was a two-layer type lotion having an excellent moisturizing effect and a good feeling of use.

Example 6 Cream (Ingredient) (%) Egg yolk phospholipid 1.0 2. Stearic acid 1.0 3. Cetanol 3.0 4. Vaseline 1.5 5. 5. Glyceryl isooctanoate 15.0 Liquid paraffin 15.0 7. 7. Dimethyl polysiloxane 2.0 Phytosterol 1.5 9. Sodium polyaspartate (Note 3) 5.0 10.1, 3-butylene glycol 10.0 11. Glycerin 10.0 12. Sodium lactate 2.0 13. Xanthan gum 4.0 14. Triethanolamine 0.5 15. Preservative appropriate amount 16. Appropriate amount of fragrance 17. Remaining purified water (Note 1) Aqua Dew SPA-30 (30%; manufactured by Ajinomoto Co.)

(Production method) A: Components 1 to 8 are heated and uniformly mixed. B: Components 9 to 15 and 17 are heated and uniformly mixed. C: B is added to A and emulsified and mixed. D: C was cooled and component 16 was added and mixed to obtain a cream. Example 6 was a cream which had an excellent moisturizing effect, had no sticky feeling, and gave a smooth feeling to the skin after application.

Example 7 Foundation (Component) (%) Hydrogenated soybean phospholipid 0.5 2. Stearic acid 1.0 3. 3. Polyoxyethylene sorbitan monostearate 1.5 (20 EO) Isopropyl myristate 3.0 5. Liquid paraffin 10.0 6. Cholesterol 0.5 7. 7. Titanium oxide 7.0 Talc 5.0 9. Suitable amount of inorganic color pigment 10. Sodium polyaspartate (Note 1) 1.0 11. Dipropylene glycol 5.0 12.1,3-butylene glycol 15.0 13. Preservative appropriate amount 14. Appropriate amount of fragrance 15. Remaining purified water (Note 1) Aqua Dew SPA-30 (30%; manufactured by Ajinomoto Co.)

(Production method) A: Components 7 to 9 are uniformly mixed. B: Components 1 to 6 are heated and uniformly mixed. C: Components 10 to 13 and 15 are heated and uniformly mixed. D: Add C to B and emulsify and mix. E: A and component 14 were added to D and mixed uniformly to obtain a foundation. In Example 7, both the moisturizing effect and the feeling of use were excellent.

[0029]

As described in detail above, the cosmetic of the present invention, which contains a polyaspartate and a specific component, has an excellent moisturizing effect, has no sticky feeling, and is applied to the skin after application. It gives a smooth feeling and is excellent in usability.

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[Procedure amendment]

[Submission date] April 28, 1999 (1999.4.2
8)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 1

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction contents]

The liquid oil of the component (C) is not particularly limited as long as it is a liquid oil which is liquid at room temperature, and those usually used in cosmetics can be used. Specifically, for example,
Fatty acids such as oleic acid and isostearic acid, hydrocarbon oils such as liquid paraffin, squalane and squalene, alcohols such as hexadecyl alcohol and oleyl alcohol, cetyl 2-ethylhexanoate, and palmitic acid
2-ethylhexyl, 2-octyldodecyl myristate, neopentyl glycol di-2-ethylhexanoate, glyceryl tri-2-ethylhexanoate, 2-octyldodecyl oleate, isopropyl myristate, glyceryl triisostearate, isostearin Ester oils such as isocetyl acid, olive oil, avocado oil, macadamia nut oil, vegetable oils such as jojoba oil, dimethylpolysiloxane, dimethylcyclopolysiloxane,
Examples include silicone oils such as methylphenyl polysiloxane, methyl hydrogen polysiloxane, octamethylcyclotetrasiloxane, octamethylcyclopentasiloxane, and decamethylcyclopentasiloxane, and one or more of these may be appropriately used depending on the purpose. Can be selected and used.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) A61K 31/66 A61K 31/66 F term (Reference) 4C083 AB242 AB432 AC012 AC022 AC072 AC102 AC122 AC242 AC302 AC352 AC422 AC542 AC582 AD162 AD352 AD411 AD412 AD492 AD571 AD572 BB13 CC01 DD33 EE06 4C086 AA01 AA02 DA41 MA03 MA05 MA22

Claims (3)

[Claims] 1. A cosmetic comprising: (A) a phospholipid; (B) a polyaspartate; (C) a liquid oil; and (D) a water-soluble humectant. . 2. The amount of component (A) is 0.01 to 5% by weight, the amount of component (B) is 0.1 to 10% by weight, and the amount of component (C) is 0.05 to 50%. The cosmetic according to claim 1, wherein the amount of the component (D) is 0.1 to 50% by weight. 3. The cosmetic according to claim 1, further comprising cholesterol and / or phytosterol as the component (E).