JPH0374312A - Cosmetic - Google Patents

Abstract

PURPOSE:To obtain a cosmetic having high skin care effect and excellent feeling to the skin by using an N-acyllysine, a lubricant and a water-soluble humectant as essential components. CONSTITUTION:The objective cosmetic can be produced by using 0.1-10wt.% of an N-acyllysine, 10-70wt.% of a lubricant (e.g. diglyceride) and 20-80wt.% of a water soluble humectant (e.g. glycerol) as essential components and properly compounding water, a pH-modifier, a preservative, a thickener, an emulsifying agent, a perfume, etc. It can be used in the form of a milky lotion for skin and hair-treatment, a gelatinous cosmetic, a cleaning agent, a cleansing material, a rinse, a pack, a hair-treatment, etc. The skin-care effect such as emollient effect and moisture-retaining effect can be maintained at a high level even at high content of the lubricant and the humectant. It has no defect such as stickiness and glittering.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention contains a large amount of oil and moisturizing agent, has a high skin care effect, and has two drawbacks: ``stickiness'' and ``glare.'' It is related to cosmetics that are free of.

[Problems to be solved by conventional techniques and inventions] Cosmetics are used for the purpose of keeping the skin in a healthy condition, and are composed of many raw ingredients.
Its main components are an oil agent that functions as an emollient, an aqueous phase containing a water-soluble humectant that has a moisturizing and moisturizing effect, and an emulsifier used to uniformly mix these oil agents and the aqueous phase. It is. Therefore, in order to enhance skin care effects such as emollient effects and moisturizing effects on the skin, it has been necessary to incorporate large amounts of oils and water-soluble humectants.

However, when a large amount of oil is added, the ``glare'' will increase when used, and when a large amount of water-soluble moisturizer is added, the ``stickiness'' tends to increase, which is generally unfavorable for the feel of the product. be.

Therefore, the object of the present invention is to provide a skin care product that has high skin care effects even if it contains large amounts of oils and moisturizers, and that does not cause stickiness.
The purpose of the present invention is to provide cosmetics that are free from the disadvantages of ``glare'' and other disadvantages.

[Means to solve the problem]

The inventors of the present invention have conducted intensive research to achieve the second object, and have developed a cosmetic containing a large amount of an oil agent and a water-soluble moisturizing ingredient, and in which N-acyl lysine, which is a plate-shaped powder, is uniformly dispersed. The present invention has been completed based on the discovery that the skin care effect and usability are excellent.

That is, in the present invention, in the total weight of the cosmetic, (a) N-iso/
I/+) 0.2-10% by weight of synthetic, (b) 10-70% by weight of DT agent, and (c) 20-80% of water-soluble moisturizing ingredient.
% by weight.

The cosmetics of the present invention will be explained in detail below.

The N-acyl lysine which is the component (a) of the present invention is as follows-
It is a compound represented by formula (1), and N-acyl lysine is particularly preferred. Specific examples include N-lauroyl lysine, N-myristyl lysine, N-paltantoyl lysine, N-stearylly lysine, N-isostearylly lysine, etc. These may be used alone or in combination of two or more. .

(In the formula, I'?1 and R2 are hydrogen or carbon atoms 8 to 22
represents an acyl group, and at least one of them is an acyl group. ) The above N-acyl lysine can be produced by a known method, for example, a method in which lysine is used as a copper salt to protect the α-acino group, and then the ε-amino group is acylated with acid chloride, p p I-1 using -nitrophenyl ester
It can be obtained by many methods, such as selectively acylating the ε-amino group in No. 11, acylating by heating dehydration of lysine and fatty acid, and acylating by reacting lysine with an acid anhydride. can.

The blending amount of the above N-acyl lysine is 0.1 to 10% by weight.
, preferably 0.2 to 5% by weight. ”: If the amount of notation is less than 0.1% by weight, the desired usability improvement effect cannot be obtained, and even if 10% by weight or more is added, the effect will not be improved and there is no merit in adding it.

In addition, as the oil agent (b) Ij of the present invention, oil agents that have conventionally been widely used as cosmetic raw materials can be used, but stratum corneum cells, which have recently become known to have high skin care effects, can be used. Interstitial lipids, namely ceramide, sugar ceramide, cholesterol, fatty acid cholesteryl ester, higher fatty acid having 12 or more carbon atoms, or the following formula (
It is preferable to use lipids similar to intercellular lipids of the stratum corneum, such as an amide compound represented by TI), or diglycerides, which are known to improve transdermal absorption of humectants and medicinal agents.

R' OCR2 0CH○)f ]1 R2-(, -N-CT(2(IT) CH2CH,011 (R1 is a linear or branched saturated or unsaturated hydrocarbon group having 10 to 26 carbon atoms) and R2 represents a linear or branched saturated or unsaturated hydrocarbon group having 9 to 25 carbon atoms.) The blending amount of the oil agent is 10 to 7
0% by weight, preferably 20-50% by weight. If the amount is less than 10% by weight, a sufficient emollient effect cannot be obtained, and if it is more than 70% by weight, the feeling of use may be unfavorable.

In addition, as the water-soluble moisturizing ingredient which is the component (c) of the present invention, glycerin, propylene glycol, Solby-
polyols such as polyols, amino acids, pyrrolidone carboxylic acid, NMFs such as urea, hyaluronic acid, pectin,
Examples include water-soluble polymers such as collagen.

The amount of the water-soluble moisturizing ingredient listed in 2 is 20 to 80% by weight,
Preferably it is 30 to 70% by weight. ”The compounding amount is 2.
If it is less than 0% by weight, a sufficient moisturizing effect will not be obtained, and if it exceeds 70% by weight, problems will arise regarding the feel of use.

The water content in the cosmetic composition of the present invention is desirably 30 weight or less from the viewpoint of moisturizing effect.

The cosmetic composition of the present invention exhibits remarkable effects when used as a cosmetic composition consisting of an oil base having an oil base of 20 weight or more. It is preferable that the cosmetic is made into a sherry-like cosmetic in which a water-soluble moisturizing ingredient is gelled with a surfactant, and the water content is 30% by weight or less.

The cosmetic composition of the present invention has a viscosity of 3,000 centivoice or more, particularly 50. OOO~I00 o.

Preferably it is O centiboise.

In addition, in addition to the above-mentioned essential ingredients, the cosmetic of the present invention may include purified water (water), a pH adjuster,
Preservatives, thickeners, emulsifiers, fragrances, etc. can be added as appropriate.

The cosmetics of the present invention can be used as skin/hair care emulsions, gel cosmetics, detergents, cleansing agents, rinses, pack agents, monthly treatments/hair treatments, etc. In particular, cleaning agents, cleansing agents, Rinse, pack agent, body/
It is preferably used in a system for rinsing off after applying a hair treatment.

〔Example〕

Next, the present invention will be explained in more detail with reference to Examples.

However, the present invention is not limited to the following examples.

Example 1 Moisture Cream Cosmetics (moisture creams) according to Invention Crystals 1 and 2 were manufactured according to the following preparation method using the ingredients not shown in Table 1 below. Practical tests were conducted on the following test methods, and the results are shown in Table 2 below.

・Of the ingredients shown in Table 1 below, (6), (7), (9)
Components 00) and 02) are mixed and dissolved by heating if necessary), and the previously mixed and dissolved components (2) and (4) are slowly added while stirring. After that, (1
Component) and component (II) are added and filled into a container to obtain Crystal 1 of the present invention.

Invention Crystal 2 is also prepared in the same manner as Invention Product 1.

- Extensive Practical Test (Banertes 1-) The samples prepared as described above (Crystals of the Invention 1 and 2) were actually used and evaluated in practice by 10 expert panelists. The evaluation items were two items: less stickiness and less glare. The evaluation results are shown in Table 2 below.

The evaluation results in Table 2 below were expressed using the following four-level evaluation criteria.

◎: More than 10 people answered that it was good.

○: 10 or more people answered that it was good.

Δ: 10 or more people answered that it was good.

×: Fewer than 10 Chinese and Japanese people answered that it was good.

Table-1 Table-2 As is clear from the results shown in Table-2, both the moisture creams of Crystals 1 and 2 of the present invention did not become sticky or glare even if they contained a large amount of oil and moisturizer. There was no feeling of stickiness and the usability was good.

In addition, the present invention crystal 1 except that N-acyl lysine was not blended
and Comparative product prepared in the same manner as 2] and 2,
Pairwise comparisons were made by 10 expert panelists. The results are shown in Tables 3 and 4 below.

Table 3 (Unit: Weight %) Note] *■: Amihope LL (manufactured by Ajinomoto Qn) Table 4 Example 2 Using ingredients not shown in Table 5 below, the present invention product 1 of Example 1 and In the same manner, cosmetics of Inventive Product 3 and Comparative Product 3 (cosmetics containing ordinary moisturizers) were prepared, and each of the obtained cosmetics had a lasting moisturizing effect by the following method. Unit: weight %) *1 Same as that used in Example 1.

*2 A Z-do compound represented by the above-mentioned formula (lI),
R': C, 6H, and R2: C, R3.

A fixed amount of the above samples (invention product 3 and comparative product 3) was applied to the inner part of the forearm, left to stand for 3 hours, then washed with hot water, and then heated to a temperature of 2.
The subjects were placed in a constant temperature/constant room with 0'C1 humidity of 50%, and after 1 hour had passed, the water content of the stratum corneum was measured using an impedance meter (manufactured by IBS).

When the average value (N=8) of the above measured values was compared, the present invention product 3 had an average value of 86 μσ, whereas the comparative product 3 had an average value of 43 μσ.
It became clear that the product of the present invention had an excellent long-lasting moisturizing effect.

Example 3 Cleansing cream Using the ingredients shown in Table 6 below, the same method as inventive product 1 of Example 1 was carried out to prepare inventive product 4. A cosmetic product (paste-like wash-off type pack) of Inventive Product 5 was obtained in the same manner as Inventive Crystal 1 of Example 1 using a compounding ingredient consisting of M.

Table-7 Cosmetics (hair products) ment) was obtained.

Table Example 5 Hair Treatment Using the ingredients shown in the following Table 8, the invention product 6 was prepared in the same manner as the invention product 1 of Example 1. A cosmetic (facial cleansing cream) was obtained in the same manner as inventive product 1 of Example 1 using the following ingredients.

Table 9 Crystals of the Invention 7 6 [Effects of the Invention] The cosmetic of the present invention has high skin care effects such as emollient effect (skin softening effect) and moisturizing effect even if it contains a large amount of oil and moisturizing agent. It feels good when used.

Claims (1)

[Claims] In the total weight of cosmetics, (a) N-acyl lysine 0.1 to 10
% by weight, (b) 10-70% by weight of an oil agent, and (c) 20-80% by weight of a water-soluble moisturizing ingredient.