JPS59104308A - Pasty cosmetic for whitening skin color - Google Patents

Abstract

PURPOSE:The titled cosmetic that is obtained by adding ascorbic acid-higher fatty acid ester, polyglycerol branched higher fatty acid ester and liquid oil, thus having homogeneous appearance, gloss and high stability and showing rapid action to whiten skin color. CONSTITUTION:The objective cosmetic contains 6-40wt% (based on the total weight of the components) of ascorbic acid higher fatty acid ester,a liquid polyglycerol branched higher fatty acid ester and liquid oil, preferably contains 8-20wt%, based on the total weight, of ascorbic acid higher fatty ester such as ascorbic monostearate, 40-90wt%, preferably 60-85wt%, of a liquid polyglycerol branched higher fatty acid ester of the formula (R is H, residual group of branched higher fatty acid of 8 or more carbon atoms, where 2 or more Rs are H atoms per one molecule, but all of them are not H; n is 0-8) and 4-50wt%, preferably 10-30wt% of liquid oil such as olive oil.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is characterized in that ascorbic acid higher fatty acid ester is uniformly dissolved in a mixed system of liquid polyglycerin side chain fatty acid ester and liquid oil to form an amorphous paste. It has a homogeneous appearance, high gloss, and excellent stability.
The present invention relates to a novel paste-like whitening cosmetic that has a good whitening effect and a visible sensation when used.

Conventionally, ascorbic acid and its esters have been used in whitening cosmetics because of their strong oxidation-reduction effects, which have cellular respiration, enzyme paper activation, and collagen-forming effects, and because of their melanin-reducing effects. However, ascorbic acid is easily decomposed by light, heat, oxygen, metal ions, PH, etc., and has poor stability, resulting in a reduction in whitening effect, a reduction in vitamin C action, and side effects.

On the other hand, ascorbic acid higher fatty acid esters undergo reactions such as hydrolysis and transesterification, resulting in denaturation and coloration in systems containing ethyl alcohol, water, and basic substances (cream, lotion paste, etc.). Decreases wrinkle whitening effect. In order to improve these drawbacks, 1-hydroxyethane-
1. Many stabilizers such as 1-diphosphonic acid (salt) have been developed, but in the mixed system as mentioned above, long-term storage tends to cause coloring and whitening effects, and most of them are not satisfactory. It hasn't been discovered yet. In order to stabilize and dissolve ascorbic acid higher fatty acid ester, it is possible to use it by dissolving it in an oily base that does not contain water, alcohol, etc. However, the ester oil is difficult to dissolve in liquid oil, and it is difficult to dissolve it by heating. If it is cooled or left unattended, clouding, precipitation, recrystallization, etc. are likely to occur.

There are currently no suitable solubilizers or emulsifiers.

Furthermore, powdered whitening cosmetics containing powdered ascorbic acid or its esters are relatively stable, but they require a lot of effort to mix into lotions and creams.
Poor skin permeability and fast-acting properties.

The object of the present invention is that ascorbic acid higher fatty acid ester is
It is uniformly dissolved in a mixed system of liquid polyglycerin side chain higher fatty acid ester and liquid oil, and has a homogeneous appearance.
To provide a paste-like whitening cosmetic that has luster, excellent stability, acts quickly on the skin during use, and can provide an excellent whitening effect, good touch, and water repellency.

Kayu) VtX (R'35 丞ゆう 4? Tobari Garlic. In other words,
The present invention is a whitening cosmetic in the form of a paste, which is characterized by comprising an ascolhinoic acid lower fatty acid ester, a liquid polyglycerin side chain island class fatty acid ester, and a liquid oil.

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

The ascorbic acid higher fatty acid esters used in the present invention are monoesters, siesters, triesters, etc. consisting of ascorpine and higher fatty acids, and the acid moiety of the ester is, for example, lauric acid, myristic acid, valmitinic acid, etc. acids, stearic acid, arachidonic acid, behenic acid, cerotic acid, oleic acid, linoleic acid, etc.

Among them, ascorbic acid monostearate, ascorbyl/acid monobalmitate, ascorbic acid monooleate, ascorbic acid distearate, ascorbic acid cyhalmitate, ascorbic acid tribalmitate, etc. are preferred because they are easily available.

Ascorbic acid higher fatty acid esters may be used alone or in combination. The amount of ascorbic acid higher fatty acid ester used (compounding amount) is 6 to 40% by weight, preferably 8 to 20% by weight, based on the total weight of the prescription ingredients (the cosmetic).
Weight%. When it is less than 6% by weight, the viscosity of the product becomes low and it is difficult to form the desired whitening cosmetic paste, and when it is more than 40% by weight, ascorbic acid high fat products are produced freely. It is undesirable because it is difficult to give a good, homogeneous and glossy appearance, and it also gives a rough and unpleasant feel to the skin.

The liquid polyglycerin higher fatty acid ester used in the present invention includes polyglycerin which is a self-condensation product of glycerin (diglycerin, triglycerin, tetraglycerin, pentacrycerin, hexaglycerin, hebutaglycerin, ocdaglycerin, nonaglycerin). , decaglycerin, etc.) and a higher fatty acid having a side chain of 8 or more carbon atoms.

An example is the following formula (in the formula, R is a hydrogen atom or a side chain higher fatty acid residue having 8 or more carbon atoms.
There are more than 1 hydrogen atoms, but they cannot all be hydrogen atoms. n is. As the side chain higher fatty acid in the above side chain higher fatty acid residue which is 1 to 8, for example, isooctanoic acid, indecanoic acid, indodecanoic acid, monoinomiristic acid, isopalmitic acid, isostearic acid, etc. are preferable.

Preferable examples of the polyglycerin include diglycerin, triglycerin, tetraglycerin, pentaglycerin, nonaglycerin, octaglycerin, decaglycerin, and hexaglycerin. In the case of diglycerin, it is most preferable because it is easy to prepare (formulate) a paste-like whitening cosmetic that has a good feel (less sticky feeling and low greasiness).

The polyglychlin side chain higher fatty acid ester is preferably a partial ester in which at least two or more free -J-Of{ groups remain in the molecule. When the part is S1, the solubility of the ascorbic acid higher fatty acid ester increases and it has a beautiful appearance.
It is preferable because it is easy to obtain a paste-like whitening cosmetic that has excellent stability during storage, whitening effect and feel during use, and 1) aqueous properties.

The amount of the polyglycerin side chain higher fatty acid ester used is 40 to 90% by weight, preferably 60 to 85% by weight, based on the weight of the composition. Crystals of fatty acid esters tend to precipitate.
(Water oil, hydrocarbon oil) may be used, such as almond oil, olive oil, sesame oil, safflower oil, mink oil, avocado oil, jojoba oil, isobrobyl myristate,
Isobrobyl palmitate, octyldodecyl myristate, inglovir isostearate, decyl oleate, hexyl laurate, diinobro, pyradipate,
Preferred are diisopropylseparate, oleyl alcohol, isostearyl alcohol, ctyldodecanol, hexyldecanol, heptylundecanol, and the like.

The amount of formula family Bamboo Q Kiri liquid oil to be used is based on the composition ThlDJtttK'.
It is 4 to 50% by weight, preferably 10 to 30% by weight.

If the amount is less than 4% by weight, the sticky feeling increases and is not pleasant.

``When the Offi amount % increases, crystals of ascorbic acid higher fatty acid ester tend to precipitate, making it difficult to obtain a product with a glossy and homogeneous appearance.

Conventional additive ingredients used in the present invention include fragrances, colorants, and vitamins A and D as needed.
Vitamins such as, urocanic acid, and other known K+M absorbers may be added. The paste whitening cosmetic of the present invention is a mixture of liquid polyglycerin side chain (branched) higher fatty acid ester and liquid oil. It is uniformly dissolved in the system, has a homogeneous appearance, has an original value of ν, has excellent stability, has an extremely rapid effect on the skin when used, has an excellent whitening effect, and has a good texture. Its effects are remarkable, such as providing water repellency, and its commercial value is extremely important.

Examples of the present invention will be described below.

In the Examples, % means 1% by weight, and parts means j parts by weight.

The feel, white effect, and foot comfort were examined using the methods described below.

(A practical test was carried out by 20 testers specializing in the feel of the product, and the presence or absence of a sticky feeling Q) was investigated.

(2) Gloss According to method 2 of the gloss counterfeit measurement method of JIS-Z8741-1962.

Based on the Gardner method for oil and fat analysis.

(4) Whitening effect Samples were applied to the faces of 10 women with dark skin, age spots, and freckles every morning and evening for 3 months for 3 months, and the number of people who answered that the product had a whitening effect was investigated.

(5) Hardness pressure sensitive shaft 5.6/, spring 100gr, weight 10
Measurements were made using a card tension meter with a rising speed of η inch/sec.

(Articles Test Method 1965 Cosmetics Test Method B.2.(2).
Hardness, according to the Card Tennoyon meter method. ) Example 1 (1) Prescription 1. 15 parts olive oil2. Buscorby/acid monostearate 10 parts 6 Polyglycerin side chain fatty acid ester 75 parts (as shown in Table 1) (2) Production Heat the above components 2 and 3 to 100°C in an oil bath and dissolve them uniformly. After that, pour it into a cold metal vat and let it cool down quickly.

Next, this paste and the above-mentioned component 1 were mixed with a roller to prepare a paste-like whitening cosmetic composition of the present invention.

(3) Product Characteristics It is clear from the results in Table 1 that the paste whitening cosmetic of the invention has good feel, gloss, color tone, whitening effect, and stability of asconolebic acid monostearate. Ah, huh. 1-1 Comparative Examples 1 to 6 The same procedure as in Example 1 was conducted for urine, except that each of the liquid substances shown in Table 2 was used in place of the 61ill fatty acid ester on the polyglycerin side. The results are shown in Table-2.

(2) Example 2 A paste whitening cosmetic was prepared in the same manner as in Example 1, except that diglycerin diisostearate was used as the polyglycerin side chain fatty acid ester and various changes were made as shown in Table 3 as ascorbic acid higher fat butyric ester. was prepared [5.

As is clear from the results in Table B, by using the ascorbic acid higher fatty acid ester of the present invention, it is possible to obtain a paste-like whitening cosmetic that has excellent feel and gloss, and has little change over time such as color complaints. Example 3 The blending amount of ascorbic acid monostearate was changed as shown in Table 4, and as polyglycerin side chain fatty acid ester,
A paste-like whitening cosmetic was prepared in the same manner as in Example 1, except that diglycerine diinstearate was used.

As is clear from Table 4, the amount of ascorbic acid higher fatty acid ester of the present invention is 6 to 40% by weight. If it is less than 6% by weight, the viscosity of the product is low and the desired paste-like whitening cosmetic cannot be obtained.In addition, if it is more than 40% by weight, the ester recrystallizes, resulting in a glossy, homogeneous appearance. I can't get the product...
Example 4 A paste whitening cosmetic was prepared in the same manner as in Example 1, except that the polyglycerin side chain fatty acid ester shown in Table 15 was used.

As is clear from Table 5, the small glycerin side chain fatty acid ester is preferably a glycerin side chain fatty acid in which two or more OH groups remain in the molecule.

Example 5 A whitening cosmetic paste was prepared in the same manner as in Example 1, except that the amount of olive oil was changed as shown in Table 6, and diglycerin diinostearate was used as the polyglycerin side chain fatty acid ester. .

As is clear from Table 6, the liquid oil formulation ii of the present invention is 4 to 50% by weight. The feeling of stickiness has increased, which is less than the 4-layered view% [7], which is not desirable. 50 Mi. '56
When there is a lot of fat, ascorbic acid high-grade fat k2f-=,
Example 6 The liquid oil shown in No. 7 was used instead of olive oil (jelly oil), and polyglycerin chain fatty acid ester was used instead of olive oil (jelly oil). A paste-like whitening cosmetic was prepared in the same manner as in Example 1, except that Digly7rin diisostearate was used as the base material. As is clear from the results in Table 7, if an oily substance that is normally liquid at room temperature is used as the liquid oil in the present invention, an Iheaste-like Miyama cosmetic with excellent feel and gloss and little change in color tone over time (7) can be obtained. can get.

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Claims (1)

[Claims] (1) 6 to 40 weight percent (based on the total weight of prescription ingredients)
1. A paste-like whitening cosmetic comprising a higher fatty acid ester of ascorbic acid, a liquid polyglycerin side chain higher fatty acid ester, and a liquid oil. (2) the ascorbic acid higher fatty acid ester is ascorbic acid monostearate, ascorbic acid monopalmitate, ascorbic acid monooleate, ascorbic acid dipalmitate, ascorbic acid dioleate, ascorbic acid distearate, ascorbic acid torino<<noremitate>, or a combination thereof; Claim No. (
Whitening cosmetics described in paragraph 1) (3) Ascorbic acid higher fatty acid ester is blended in an amount of 8 to 20% by weight based on the total weight and shortness of the skin whitening cosmetic according to paragraph (1). Cosmetics. (4) The liquid polyglycerin side-chain higher fatty acid ester is a partial ester and has an average of two or more unreacted OH groups remaining per molecule.
Whitening cosmetics described in section 1). (5) Liquid polyglycerin side chain higher fatty acid ester; the following formula (in the formula, R is a hydrogen atom or a side chain higher fatty acid residue having 8 or more carbon atoms. However, R is 92 per molecule) The above are hydrogen atoms, but not all of them are hydrogen atoms.n
is O or 1-8. ) A whitening cosmetic according to the claims, which is at least one of the compounds represented by: (3) The whitening cosmetic according to claim (1), wherein the liquid polyglycerin side chain higher fatty acid ester is blended in an amount of 40 to 90% by weight based on the total weight of the liquid. (4) The liquid oil is almond oil, olive oil, sesame oil,
Safflower oil, mink oil, avocado oil, jojoba oil, isoglobil myristate, isoprovir l curmitate,
Octyldothenelumiristate, isoprobyl instearate, decyl oleate, hexyl laurate, diisobutyradipate, diisoprobyl sebacate, oleyl alcohol, instearyl alcohol, octertotecanol, hexyldodecanol, hexyldecanol The whitening cosmetic according to claim (1), which is putylundecanol or a combination thereof. (5) The whitening cosmetic according to claim (1), wherein the liquid oil is blended in an amount of 4 to 50% by weight based on the total amount of treatment a.