JPH0477409A - Cosmetic - Google Patents

Abstract

PURPOSE:To obtain a cosmetic having excellent beautifying effects on skin, high moisture retention and high safety by blending a vitamin C derivative with gum and a cellulosic polymer. CONSTITUTION:(A) A vitamin C derivative such as L-ascorbic alkyl ester or L-ascorbic phosphoric ester is blended with (B) gum and (C) a cellulosic polymer such as methyl cellulose, CMC, nitrocellulose in a ratio of 0.001-15wt.%, especially 0.01-5wt.% component A, 0.001-10wt.%, especially 0.01-5wt.% component Band 0.001-10 wt.%, especially 0.01-5wt.% component C based on the whole amounts or cosmetic.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is characterized by blending a vitamin C derivative, camellia, and cellulose polymer, and has an excellent whitening effect on the skin. The present invention also relates to cosmetics that have a high moisturizing effect and are highly stable.

[Conventional technology]

Conventionally, vitamin C derivatives and polymer compounds have been blended into cosmetics in order to provide them with excellent whitening effects and excellent moisturizing effects. However, when used in combination with an ionic polymer to impart a moisturizing effect, the polymer hardens and precipitates due to the salting-out effect, and when used in combination with a nonionic polymer, the viscosity decreases over time. However, there was a drawback that the moisturizing effect was impaired. These phenomena become more noticeable when the amount of vitamin C derivatives added is increased, making it difficult to obtain sufficient whitening and moisturizing effects.

[Problem to be solved by the invention]

In view of these circumstances, the inventors of the present invention have conducted intensive research to improve the drawbacks of the above-mentioned prior art, and have found that vitamin C.
The present inventors have discovered that by blending derivatives with cams and cellulose polymers, it is possible to obtain cosmetics with excellent whitening effects that do not impair temporal stability or moisturizing effects, and have completed the present invention.

[Means to solve the problem]

That is, the present invention is a cosmetic composition characterized by blending a vitamin C derivative, a gum substance, and a cellulose polymer.

Hereinafter, the configuration of the present invention will be explained in detail.

The vitamin C derivatives (hereinafter abbreviated as VC derivatives) applied to the present invention are derivatives of vitamin C, that is, L-ascorbic acid, such as L-ascorbic acid alkyl esters, L-ascorbic acid phosphate esters, and L-ascorbic acid esters. Specific examples include L-ascorbyl palmitate, mono-ascorbyl isopalmitate, mono-ascorbyl civalmitate, mono-ascorbyl cisonolumitic acid, ascorbyl stearate, mono-ascorbyl isostearate, and distearin. Mono-ascorbyl acid, mono-ascorbyl diisostearate, mono-ascorbyl myristic acid, mono-ascorbyl isomyristic acid, mono-ascorbyl simiristic acid, mono-ascorbyl diisomyristic acid, mono-ascorbyl 2-ethylhexanoate, di-2- Ethylhexanoic acid, mono-ascorbinopeoleic acid, mono-ascorbyl, dioleic acid, mono-ascorbyl, etc., mono-ascorbic acid alkyl ether, L-ascorbic acid-2-phosphate, L-ascorbic acid-3-phosphate, DL −α−
Tocopherol 2-L-ascorbic acid phosphoric acid ester, etc., L-ascorbic acid-2=sulfuric acid ester, L-ascorbic acid-3
- Ascorbic acid sulfate esters such as sulfuric acid esters are mentioned, and these are used alone or in combination of two or more. Further, in the present invention, these salts can also be used, and alkali metal salts such as sodium salts and potassium salts, alkaline earth metal salts such as calcium salts and magnesium salts, etc. are preferably used.

Among the above-mentioned VC derivatives, monoascorhinic acid phosphate ester or its salt gives particularly favorable results when blended into cosmetics with gum and cellulose polymers, and is preferably used in the present invention. It is something that can be done. The above-mentioned VC derivatives are mainly obtained by known synthetic methods, but of course those obtained by other methods can also be used, and commercially available vitamin C derivatives can be used.

The amount of VC derivatives added to cosmetics is 0.0 in the total amount of cosmetics.
0.01 to 15% by weight is preferred, and 0.1 to 5% by weight of O is particularly preferred in terms of its whitening effect and its absence of harmful effects such as stickiness as a cosmetic. Note that the effect of adding gummy and cellulose polymers is noticeable when the amount is 0.05% by weight or more.

The gum used in the present invention is a naturally occurring resin secreted by plants or a polysaccharide produced by bacteria, which forms a highly viscous mucilage when dissolved in water or an organic solvent. Rubber, benzoin rubber, dammar gum, guaiac oil, Irish moss, karaya gum, tragacanth gum, carob gum, quince seed, etc. are used, and one type or a mixture of two or more of these can be used. Among the above-mentioned gums, xanthan gum is particularly suitable. The amount of gummy material to be blended is preferably 0.001-10% by weight based on the total amount of the cosmetic, but 0.001% to 10% by weight based on the total amount of the cosmetic is preferable. Particularly preferred is O 1 to 5% by weight.

The cellulose-based polymer used in the present invention has a substituted hydroxyl group in the cellulose molecule, and includes methylcellulose, ethylcellulose, carboxymethylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, nitrocellulose, etc. They may be used alone or in combination of two or more. The amount of cellulose-based polymer blended is preferably 0.001-10.0% by weight based on the total amount of cosmetics.
As a cosmetic, it is moist and does not cause stickiness, precipitation of other ingredients, odor or discoloration over time.
．． 01 to 5.0% by weight is particularly preferred.

The weight ratio of gum and cellulose polymer is 20/
1-1/20 is preferred, and 10/1-1/10 is particularly preferred.

In addition to the above-mentioned essential ingredients, the cosmetic of the present invention may optionally contain powder, pigment, oil, humectant, surfactant, antioxidant, thickener, organic solvent, etc., depending on the type of cosmetic. Ingredients commonly used in cosmetics, such as solubilizers, preservatives, antifungal agents, and perfumes, can be appropriately incorporated within the range that does not impair the effects of the present invention.

The dosage form of the cosmetic of the present invention is arbitrary, and any dosage form may be used, such as a solution type, solubilized type, emulsion type, powder dispersion type, water-two-layer type, water-oil-powder three-layer type, etc. Further, the cosmetics of the present invention can be used as desired, and cosmetics such as lotions, milky lotions, creams, packs, foundations, body cosmetics, and cleansing foams are particularly preferred.

〔Example〕

Next, the effects of the combination of vitamin C derivatives, gums, and cellulose polymers will be further explained with reference to examples. The effectiveness was measured using the following evaluation method. The blending amount is in weight%.

Evaluation of whitening effect and moisturizing effect〉 A panel of 20 mixed male and female needle users applied the control field to the inside of the left upper arm and the present invention to the inside of the right upper arm, twice a day in the same manner as in normal use. After application and continued use for 30 days, skin gloss and dullness were sensually evaluated, whitening effect was measured, and moisture content in the stratum corneum at the application site was measured to evaluate moisturizing effect. The evaluation criteria are as follows.

Tateten n41 ◎ 15 or more people felt that the shine and dullness were improved Q 10 or more people felt that the shine and dullness were improved △ 5 or more people felt that the shine and dullness were improved × Less than 4 people felt that shine and dullness were improved ☆ Moisturizing effect ◎ More than 15 people felt that the amount of water in the stratum corneum increased 0 10
△ 5 or more people had an increase in water content in the stratum corneum × 4 or less people had an increase in water content in the stratum corneum Evaluation of stability Each sample was stored in thermostats at 0° C., room temperature, and 50° C. for one month, and the degree of change in viscosity of the products stored at room temperature and 50° C. relative to the products stored at 0° C. was evaluated as follows.

A: Almost no change B: Decreased viscosity at 50°C C: Decreased viscosity at both room temperature and 50°C Test example A lotion was manufactured by a conventional method based on the formulation in Table 1,
The whitening effect, moisturizing effect, and stability were evaluated.

(Left below) Example 3 Moisture lotion A Vaseline 1.0 Liquid paraffin 2.0 Tocopheryl acetate 0.5P OE (20)
Oleic acid 1.0 Glycerin monoerate 1.0 Propylparaben
0.2 fragrance
0.1B propylene glycol
1.0 Gum Arabic 0.
03 Ethyl cellulose 0.05L
-Ascorbic acid-3-0,05 sulfate ester potassium salt purified water Residue (manufacturing method) The raw materials for the oil phase belonging to A and the raw materials for the aqueous phase belonging to B are heated to 70°C and completely dissolved, and then The oil phase is mixed with the water phase and emulsified using an emulsifier. The emulsion is cooled to a final temperature of 30°C using a heat exchanger.

The moisturizing lotion obtained above has a whitening effect,
It had excellent moisturizing effect and stability.

Example 4 Night cream A Setanol 2.0 Vaseline 2.0 Squalane 21.0 Glycerin monofatty acid ester 2.2 Tween 60
2.8 Isopropyl myristate 6.0 Stearyl glycyrrhetinate
0.5 Ethylparaben 0
．． 3 Fragrance 0/2B
Glycerin 10.0 Propylene Glycol 5.0 Quince Seed
2.0 xanthan gum
0.5 carboxymethyl cellulose
5. OL-ascorbic acid-2-phosphate
0.02 ester sodium salt purified water Residue (manufacturing method) The raw materials for the oil phase belonging to A and the raw materials for the aqueous phase belonging to B are heated to 70°C and completely dissolved, and then the oil phase is converted into the aqueous phase. and emulsify it using an emulsifying machine. After the emulsion is cooled to a linear temperature of 30°C using a heat exchanger, filling is performed.

The night cream obtained above had excellent whitening effect, moisturizing effect, and stability.

Kan i Gojo Foundation A Setanol 3.5 Deodorized Lanolin 4.0 Jojoba Oil
5.0 Vaseline
2.0 squalane
6.0 Glycerin monofatty acid ester
2.5POE (60) hydrogenated castor oil
1.5POE(25) Cetyl ether
1.0 Ascorbic acid dipalmitate 0.5 Ethylparaben 0.3 Fragrance
0.1B glycerin
2.0 propylene glycol
5.0 blended powder
12.0 talc
6.2 Titanium dioxide 5.0 Iron oxide Fe203o, 32 Iron oxide Fe, r, o, 08 Iron oxide Fed(OH) 9.4
L-ascorbic acid-2-sulfate ester 1.0 Magnesium salt Karaya gum 4.0 Ethyl cellulose 0.8 Methyl cellulose 0.2 Purified water
Residue (manufacturing method) After heating the raw materials for the oil phase belonging to A and the raw materials for the aqueous phase belonging to B to 70°C and completely melting them, mix the oil phase with the water phase and emulsify with an emulsifier. Emulsify. The emulsion was cooled to a linear temperature of 30°C using a heat exchanger to obtain a foundation.

The foundation obtained above had good stability and was excellent in whitening effect and moisturizing effect.

〔Effect of the invention〕

The cosmetic of the present invention has an excellent whitening effect and a high moisturizing effect on the skin by blending a vitamin C derivative, a gum substance, and a cellulose polymer, and provides a highly stable cosmetic. be.

Patent applicant: Shiseido Co., Ltd.

Claims (1)

[Claims] (1) A cosmetic comprising a vitamin C derivative, a gum, and a cellulose polymer.