JP2003267819A - Cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cosmetic that contains an ascorbic acid derivative as an active ingredient exhibits excellent skin-whitening effect, shows no greasiness with fresh touch and has high stability with the passage of time. <P>SOLUTION: The cosmetic comprises 0.01-5 mass % of a salt of carboxymethylcellulose having a polymerization degree of ≥500 and an etherification degree of ≥0.55 and 0.2-5 mass % of water-soluble ascorbic acid and/or its derivative. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cosmetic composition, and more particularly to a cosmetic composition containing an ascorbic acid derivative as an active ingredient and having a good feel and stability during use.

[0002]

2. Description of the Related Art Conventionally, cosmetics have used ascorbic acid derivatives, kojic acid, placenta extract, etc. as active ingredients having a whitening effect, and have various dosage forms such as lotions, emulsions, creams and powders. Various types of cosmetics have been proposed. Ascorbic acid derivatives, which are active ingredients, include salts and esters,
Many derivatives have been studied, and many products containing them as active ingredients have been put on the market.

However, the ascorbic acid derivative is
The salt itself may cause problems such as destabilization of solubilization or aggregation of emulsion, causing creaming.To solve these problems, a nonionic surfactant and an electrolyte are used. Addition and stabilization (JP-A-63-243014), stabilization by a specific organic acid and water-soluble polymer (JP-A-5-33912)
No. 3, gazette) was proposed.

Further, when the cosmetic is an O / W type emulsion formulation, a method of imparting viscosity to the entire system to improve the stability is used. Specifically, waxes and high water solubility are used. Methods using molecules have been investigated. When waxes are used, it is possible to add viscosity to the system and improve the stability without being significantly affected by other components to be blended, but on the other hand, the feel of the cosmetics can be improved. As a result, there is a case where a strong oily feeling is felt and the spreadability during use becomes heavy, which sometimes makes it difficult to obtain a desired sensory characteristic. In addition, the method using a water-soluble polymer was easy to mix, but it was often affected by the ascorbic acid derivative that was the electrolyte, and it became impossible to take a gel structure, and the viscosity of the entire system was reduced. In some cases, it could not be given. In addition, the ascorbic acid derivative may be unusable such as stickiness when the amount thereof is increased to enhance the whitening effect.

[0005]

DISCLOSURE OF THE INVENTION The present invention provides a cosmetic containing an ascorbic acid derivative as an active ingredient,
It is an object of the present invention to provide a cosmetic having a high whitening effect, no stickiness, a fresh feel during use, and good stability over time.

[0006]

In view of the above situation, the present inventors have conducted diligent research to solve the above problems, and as a result,
A cosmetic containing a specific amount of water-soluble ascorbic acid and / or a derivative thereof and a specific carboxymethylcellulose salt has a high whitening effect, is non-greasy, and has a watery feel during use and good stability over time. The present invention has been completed and the present invention has been completed.

That is, the present invention has a polymerization degree of 500 or more,
A cosmetic containing 0.01 to 5 mass% of a carboxymethyl cellulose salt having an etherification degree of 0.55 or more and 0.2 to 5 mass% of water-soluble ascorbic acid and / or its derivative. Furthermore, it is an oil-in-water emulsion type cosmetic.

[0008]

DETAILED DESCRIPTION OF THE INVENTION The structure of the present invention will be described below. The water-soluble ascorbic acid and / or its derivative used in the present invention is blended for the purpose of whitening effect. The water-soluble ascorbic acid and / or its derivative used in the present invention is not particularly limited, but specific examples include metal salts of ascorbic acid such as potassium, sodium, magnesium, calcium, potassium phosphate ester, and phosphoric acid. Examples thereof include phosphate ester salts such as ester magnesium and calcium phosphate ester, and sulfate ester salts such as sodium sulfate ester and potassium sulfate ester, and these can be used alone or in combination of two or more kinds. Among these, ascorbic acid phosphoric acid ester salt, which can easily obtain a whitening effect and has good stability itself, can be exemplified as a preferable example.

The content of the water-soluble ascorbic acid and / or its derivative used in the present invention is 0.2 to 5% by mass.
(Hereinafter, mass% is shown as "%"), and more preferably 0.3 to 3%. If it is less than 0.2%, it is difficult to obtain a sufficient whitening effect, and if it exceeds 5%, the feeling of use such as stickiness may be impaired.

The carboxymethyl cellulose salt used in the present invention having a degree of polymerization of 500 or more and an etherification degree of 0.55 or more is used for the purpose of improving the stability of the entire system over time, providing a fresh feel and suppressing the stickiness of the ascorbic acid derivative. It is contained. The carboxymethyl cellulose salt used in the present invention is produced by reacting alkali cellulose with monochloroacetic acid and partially substituting the hydroxyl groups of cellulose with carboxymethyl groups. The carboxymethylcellulose salt used in the present invention has a degree of polymerization of 500 or more and an etherification degree of 0.55 or more, and specific examples thereof include sodium carboxymethylcellulose. There are three hydroxyl groups in the glucose unit of cellulose, and theoretically, carboxymethyl cellulose having an etherification degree of up to 3.0 can be produced. Also, the higher the degree of etherification, the better the salt resistance,
Even in a cosmetic composition containing an ascorbic acid derivative as an active ingredient, viscosity is imparted to the system and stability over time is improved. However, when the degree of polymerization is less than 500, the effect of imparting viscosity is not sufficient, and the effect of improving stability over time cannot be expected,
When the degree of etherification is less than 0.55, salt resistance becomes low, the effect of improving stability over time cannot be expected, and a watery feel cannot be obtained. Further, the degree of polymerization is preferably 2000 or less in order to obtain an appropriate viscosity and an excellent feeling during use.

Examples of the carboxymethyl cellulose salt include CMC Daicel 1170 and CMC Daicel 1
180, CMC Daicel 1290 (manufactured by Daicel Chemical Industries), Sunrose F30LC, Sunrose F300HC
Commercial products such as (manufactured by Nippon Paper Industries Co., Ltd.) can be used.

The content of the carboxymethyl cellulose salt having a degree of polymerization of 500 or more and an etherification degree of 0.55 or more in the cosmetic of the present invention is 0.01 to 5%, more preferably 0.3 to 3.0%. . If it is less than 0.01%, the effect of improving stability over time and the feeling of use are not sufficient, and if it exceeds 5%, the feel of use may be impaired.

The skeletal formulation of the cosmetic composition of the present invention may be an aqueous base, but in order to further improve the feeling of use such as emollient feeling and moisturizing property, an oil-in-water type emulsion cosmetic composition containing an oil agent is used. Is preferred.

The surfactant used as an emulsifier for oil-in-water emulsion cosmetics is not particularly limited as long as it is used in cosmetics, and anionic surfactants, amphoteric surfactants, cationic surfactants, A nonionic surfactant can be used. As the anionic surfactant, alkyl sulfate, polyoxyethylene alkyl sulfate, alkyl amide sulfate, alkyl sulfonate, higher fatty acid salt, alkyl ether phosphate, polyoxyethylene alkyl ether phosphate, acyl amino acid Examples thereof include salts, alkyl ether carboxylic acid salts, and alkyloxyalkyl taurine salts. Examples of the amphoteric surfactant include betaine-type amphoteric surfactant, imidazoline-type amphoteric surfactant, and phospholipid. Examples of the cationic surfactant include alkyl quaternary ammonium salts and the like. As the nonionic surfactant, polyoxyethylene alkyl ether, polyoxypropylene alkyl ether,
Polyoxyethylene polyoxypropylene alkyl ether, polyoxyethylene alkyl phenyl ether,
Polyoxyethylene cholesteryl ether, polyoxyethylene cholestanol ether, polyoxyethylene phytosterol ether, propylene glycol fatty acid ester, polyglycerin fatty acid ester, polyoxyethylene hydrogenated castor oil, sorbitan fatty acid ester,
Polyoxyethylene sorbitan fatty acid ester, polyoxyethylene glycerin fatty acid ester, glycerin fatty acid ester, ethylene oxide derivative of propylene glycol fatty acid ester, ethylene oxide derivative of glycerin fatty acid ester, ethylene oxide derivative of polyglycerin fatty acid ester, sucrose fatty acid ester, alkyl Examples thereof include glucosides, fatty acid alkanolamides, polyoxyalkylene-modified organopolysiloxane, and alkyl-containing polyoxyalkylene-modified organopolysiloxane. Among these, higher fatty acid salts, polyoxyethylene alkyl ether phosphates, acyl amino acid salts, alkyloylalkyl taurine salts, phospholipids, polyoxyethylene hydrogenated castor oil, sorbitan fatty acid esters, polyoxyethylene sorbitan fatty acid esters, glycerin fatty acids Esters, polyoxyalkylene-modified organopolysiloxanes and the like are preferable for obtaining excellent stability over time.

In addition to the above-mentioned components, the cosmetic of the present invention further contains components used in ordinary cosmetics such as oils, powders, water-soluble polymers other than the above, polyhydric alcohols, lower alcohols, and ultraviolet absorbers. , Antioxidants, bactericides, preservatives, fragrances, colorants, cosmetic ingredients and the like can be used within a range that does not impair the effects of the present invention, and the production method thereof is a method for producing ordinary cosmetics. It is possible.

The cosmetics of the present invention can be used for lotions, milky lotions, creams, beauty essences, gels and the like. The method of use is to use by hand or impregnate a non-woven fabric or the like. And the like.

[0017]

EXAMPLES Next, the present invention will be described in more detail with reference to examples, but the present invention is not limited thereto.

Examples 1 to 5 and Comparative Examples 1 to 7: Whitening emulsion A whitening emulsion was prepared according to the composition shown in Table 1 and the production method shown below. The obtained whitening emulsion was subjected to stability with time and sensory evaluation (whitening effect, feeling of use (wateriness, non-greasiness)). The results are also shown in Table 1.

[0019]

[Table 1]

<Production Method> A: 1 to 5 are uniformly dissolved at 70 ° C. B: 6 to 13 are uniformly dissolved at 70 ° C. C: Add B to A and emulsify. D: C is cooled to room temperature and 14 to 15 are added to obtain a whitening emulsion.

<Evaluation of stability over time> 5 samples of each of Table 1 were prepared.
Change in appearance (separation, creaming, gelation) based on the state immediately after preparation by incubating at 40 ° C and 40 ° C for 1 month.
Was visually observed and judged according to the following (a) four-step judgment criteria.

[0022]

<Sensory evaluation (whitening effect)> For each sample in Table 1, 10 people on the expert evaluation panel applied the skin to the skin 2 times a day.
After whitening for 1 month, the whitening effect is
The evaluation was carried out according to the 4-step evaluation standard, and the average value of the scores of the respective samples was judged by using the (c) 4-step evaluation standard.

[0024]

[0025]

<Feeling of use (wateriness, non-greasiness)>
For each sample in Table 1, by the expert evaluation panel 10 people,
The feeling of use (wateriness and non-greasiness) was evaluated according to the following (d) five-stage evaluation criteria, and the average value of the scores of each sample was determined using (e) four-stage evaluation criteria.

[0027]

[0028]

As is clear from the results of Table 1, the whitening emulsions of Examples 1 to 5 of the present invention are superior in whitening effect to the whitening emulsions of Comparative Examples 1 to 7 and are watery when used. It was an excellent whitening emulsion with good stability over time without feeling stickiness afterwards.

[0030]   Example 6: Pearl luster whitening serum     (Component) (%) 1. Ascorbic acid phosphate magnesium 2.0 2. Ascorbic acid 0.2 3. Sodium citrate 0.3 4. Methyl cellulose 0.05 5. Carboxymethylcellulose sodium (Note 1) 0.05 6. Propylene glycol 5.0 7. Dipropylene glycol 10.0 8. Glycerin 3.0 9. Aloe extract 5.0 10. Hydrogenated soybean phospholipid 1.5 11. Mica titanium 0.3 12. Methyl paraoxybenzoate Suitable amount 13. Refined olive oil 0.5 14. Vaseline 0.2 15. Fragrance 0.2 16. Purified water Remaining amount Note 1. CMC Daicel 1170 (manufactured by Daicel Chemical Industries)       (Polymerization degree about 1000, Etherification degree 0.6-0.8)

<Production Method> A: 1 to 9 and 16 are uniformly dissolved at 70 ° C. B: 10 to 14 are uniformly dissolved at 70 ° C. C: Add B to A and emulsify. D: C is cooled to room temperature, and 15 is added to obtain a pearly luster whitening beauty essence.

The pearly luster whitening beauty essence of Example 6 is an excellent pearly luster whitening beauty essence which is excellent in whitening effect, is watery at the time of use, does not feel sticky after use, and has good stability over time. there were.

[0033]   Example 7: Whitening lotion     (Component) (%) 1. Hydrogenated egg yolk phospholipid 0.3 2. Cetyl phosphate 0.2 3. Perfume 0.1 4.1,3-butylene glycol 5.0 5. Glycerin 2.0 6. Ascorbic acid phosphate magnesium 2.0 7. Methyl paraoxybenzoate Suitable amount 8. Aloe extract 5.0 9. Carboxymethyl cellulose sodium (Note 3) 0.01 10. Purified water Remaining amount Note 3. CMC Daicel 1290 (manufactured by Daicel Chemical Industries)       (Polymerization degree about 1000, Etherification degree 0.8-1.0)

<Manufacturing method> A: 1-2 is melt | dissolved uniformly at 70 degreeC. B: 4 to 10 are uniformly dissolved at 70 ° C. C: Add 3 to A, mix uniformly, and then disperse in B. D: C is cooled to room temperature to obtain a whitening lotion.

The whitening skin lotion of Example 7 was an excellent whitening skin lotion that was moist during use, had an excellent whitening effect, did not feel sticky after use, and had good stability over time.

[0036]   Example 8: Whitening cream     (Component) (%) 1. Polyoxyalkylene-modified organopolysiloxane     (Note 4) 2.0 2. Decamethylcyclopentasiloxane 12.0 3. Isononyl isononanoate 3.0 4. Dimethylpolysiloxane (100 mPa · s) 1.0 5. Propylene glycol 5.0 6. Ethanol 10.0 7. Glycerin 2.0 8. Carboxymethyl cellulose sodium (Note 5) 1.0 9. Ascorbic acid phosphate magnesium 3.0 10. Methyl paraoxybenzoate Suitable amount 11. Fragrance 0.2 12. Purified water Remaining amount Note 4. Silicon KF6015 (made by Shin-Etsu Chemical Co., Ltd.) Note 5. Sunrose F300HC (Nippon Paper Industries Co., Ltd.)       (Polymerization degree: about 1400, etherification degree: 0.8-1.0)

<Manufacturing Method> A: 5 to 10 and 12 are uniformly dissolved at 70 ° C. B: 1 to 4 are uniformly dissolved at room temperature. C: Add B to A and emulsify. D: C is cooled to room temperature and 11 is added to obtain a whitening cream.

The whitening cream of Example 8 was an excellent whitening cream which had a high whitening effect, was watery at the time of use, did not feel sticky after use, and had good stability over time.

[0039]   Example 9: Whitening gel     (Component) (%) 1. Alkyl-modified carboxyvinyl polymer (Note 6) 0.1 2. Quince seed extract 10.0 3. Carboxymethylcellulose sodium (Note 1) 1.5 4. PEG6000 3.0 5. Polyoxypropylene (9) diglyceryl ether 1.5 6. Dipropylene glycol 5.0 7. Ethanol 10.0 8. Perfume 0.1 9. Sodium hydroxide (1% aqueous solution) 3.0 10. Sodium ascorbate 2.0 11. Purified water Remaining amount Note 6. Carbopol 1342 (BF Goodrich Chemical Co.) Note 1. CMC Daicel 1170 (manufactured by Daicel Chemical Industries)       (Polymerization degree about 1000, Etherification degree 0.6-0.8)

<Manufacturing method> A: 1 to 6 and 11 are uniformly dissolved at 70 ° C. B: Disperse 7 and 8 uniformly in A, and cool to room temperature. C: Add 9 and 10 to B to make a whitening gel.

The whitening gel of Example 9 was an excellent whitening gel which had a high whitening effect, was moisturized at the time of use, did not feel sticky after use, and had good stability over time.

[0042]   Example 10: Whitening emulsion     (Component) (%) 1. Cetostearyl alcohol 1.0 2. Dialkyl carbonate (C14,15) 2.4 3. Squalane 1.5 4. Dipropylene glycol 10.0 5. Glycerin 1.5 6. Ethanol 5.0 7. Methyl paraoxybenzoate Suitable amount 8. N-stearoyl-N-methyltaurine sodium 0.3 9. Ascorbic acid phosphate magnesium 3.0 10. Carboxymethyl cellulose sodium (Note 1) 1.0 11. Perfume 0.1 12. Purified water Remaining amount Note 1. CMC Daicel 1170 (manufactured by Daicel Chemical Industries)       (Polymerization degree about 1000, Etherification degree 0.6-0.8)

<Manufacturing Method> A: 1 to 5 are uniformly dissolved at 70 ° C. B: 8 to 10 and 12 are uniformly dissolved at 70 ° C. C: Add B to A and emulsify. D: C is cooled to room temperature and 6 to 7 and 11 are added to obtain a whitening emulsion.

The whitening emulsion of Example 10 has a high whitening effect,
It is watery at the time of use and does not feel sticky after use,
It was an excellent whitening emulsion with good stability over time.

EFFECT OF THE INVENTION The cosmetic composition of the present invention has a high whitening effect, is non-greasy, has a watery feel when used, and has good stability over time.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) A61K 7/00 A61K 7/00 X F term (reference) 4C083 AA112 AA122 AB432 AC012 AC022 AC072 AC102 AC122 AC352 AC392 AC402 AC482 AC892 AD042 AD152 AD172 AD262 AD271 AD272 AD352 AD572 AD641 AD642 CC04 CC05 DD02 DD23 DD31 DD41 EE01 EE06 EE16 FF05

Claims (2)

[Claims] 1. A polymerization degree of 500 or more and an etherification degree of 0.5.
Cosmetics characterized by containing 0.01-5 mass% of 5 or more carboxymethylcellulose salts, and 0.2-5 mass% of water-soluble ascorbic acid and / or its derivative (s). 2. The cosmetic according to claim 1, which is an oil-in-water emulsion type.