JPH07304654A - Skin washing agent - Google Patents

Abstract

PURPOSE:To provide a skin washing agent having high fat-removing performance and excellent rinsing easiness, giving excellent refreshing feeling to the washed skin and extremely easily producible in a short time by compounding a gel composition composed of a polyacrylamide, a hydrocarbon and a nonionic surfactant. CONSTITUTION:This washing agent is produced by compounding a gel composition composed of (A) a polyacrylamide, (B) a hydrocarbon and (C) a nonionic surfactant. The gel composition is preferably composed of 10.0-80.0wt.% of the component A having a molecular weight of 1,000-5,000,000, 1.0-80.0wt.% of the component B selected from 4-20C isoparaffins and 0.1-20.0wt.% of the component C selected from 12-24C alkyl ethers. The amount of the gel composition in the total washing agent is preferably 0.1-10wt.%.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a skin cleanser, and more specifically to skin physiological metabolites such as sebum adhering to the surface layer of the skin, debris of the stratum corneum, oxidative decomposition products of sebum, sweat residues, and air. The present invention relates to a skin cleanser that removes dust, microorganisms, makeup cosmetics, etc. inside.

[0002]

2. Description of the Related Art Conventionally, people who have applied makeup cosmetics containing oils such as lipsticks, foundations, mascaras, and eye shadows are the first step when cleaning their face, and the first step is to make them look like a solvent that is easily compatible with makeup cosmetics. After using a cleansing cream containing a large amount of oil, cleansing oil, cleansing milk, a cleansing gel for cleansing makeup, etc., as a second step, a cleansing cream for cleansing up makeup (cleansing cream, Residual oil content of cleansing oil, cleansing gel, cleansing milk, etc.) is washed off with sebum and dirt on the skin using a facial cleanser for bare skin washing such as highly water-soluble soap and cleansing foam, and a satisfying feeling of refreshing or refreshing feeling A two-stage wash that gives a sensation was common.

In recent years, a skin cleansing agent having both a makeup removing effect and a bare skin washing effect with only one operation has been developed in response to the demand for quickness and simplicity of makeup. As such a skin cleansing agent, for example, a skin cleansing agent containing a polyethylene glycol dioleate or polyethylene glycol diisostearate having an ethylene oxide addition mole number of 10 to 18 is known (Japanese Patent Application No. 4- No. 228238).

[0004]

However, the conventional one-step aqueous gel-type detergent has a problem that a great deal of labor is required to select the type and amount of the thickener. That is, it is effective to use a carboxyl vinyl polymer in order to make it easy to wash off and to clean up after washing, but this has the drawbacks of poor finger retentivity and poor compatibility with foundation and the like. In order to improve this point, xanthan gum or a cellulosic thickening agent is effective, but it has a strong slimy feel when washed off and does not refresh after washing. Moreover, all of these thickeners took a long time to dissolve in water. The present inventors have conducted extensive studies to solve such problems, and as a result, if a gel composition composed of polyacrylamide, a hydrocarbon and a nonionic surfactant was used as a thickener, the finger-removing property was It has been found that a good cleaning agent can be obtained in terms of ease of washing off and refreshing after washing, and that the cleaning agent can be prepared very easily by using the gel.

[0005]

Means for Solving the Problems That is, the present invention is a skin cleansing agent comprising a gel composition comprising polyacrylamide, a hydrocarbon and a nonionic surfactant.

The structure of the present invention will be described below. The gel composition used in the present invention is composed of polyacrylamide, a hydrocarbon and a nonionic surfactant. As a technique using this gel composition, one in which this gel composition is blended in a cosmetic as a thickener is known (US Pat. No. 5,232,688).
No.)) is not known to be used in a one-step skin cleanser.

The polyacrylamide in the gel composition is
Those having a molecular weight of 1,000 to 5,000,000 can be used. The content of polyacrylamide in the gel composition is preferably 1.0 to 80.0% by weight, and particularly 20.
0-60.0% by weight is preferred.

As the hydrocarbon, for example, liquid paraffin, petrolatum, paraffin, ceresin, microcrystalline wax, squalane and the like can be blended. Of these, it is particularly preferable to use C4-20 isoparaffin. The amount of the hydrocarbon compounded in the gel composition is
1.0 to 80.0% by weight is preferable, and especially 10.0 to
40.0% by weight is preferred.

As for the nonionic surfactant, for example,
POE sorbitan monostearate, POE sorbitan monooleate, POE sorbitan tetraoleate, and other POE sorbitan fatty acid esters, POE sorbit monolaurate, POE sorbit monooleate,
POE sorbit pentaoleate, POE sorbit fatty acid esters such as POE sorbit monostearate, POE glycerin monostearate, POE glycerin triisostearate, and other POE glycerin fatty acid esters,
POE monooleate, POE distearate, POE
POE fatty acid esters such as dioleate, POE ethylene glycol distearate, POE lauryl ether, POE oleyl ether, POE stearyl ether, POE behenyl ether, POE 2-octyldodecyl ether, POE cholestanol ether, etc.
POE alkyl phenyl ethers such as E alkyl ethers, POE octyl phenyl ether, POE nonyl phenyl ether, POE dinonyl phenyl ether, Pluronic type such as Pluronic, POE / PO
P Cetyl ether, POE / POP 2-decyl tetradecyl ether, POE / POP monobutyl ether, P
OE / POP hydrogenated lanolin, POE / POP alkyl ethers such as POE / POP glycerin ether, tetraPOE / tetraPOP ethylenediamine condensates such as Tetronic, POE castor oil, POE hydrogenated castor oil,
POE hydrogenated castor oil monoisostearate, POE hydrogenated castor oil triisostearate, POE hydrogenated castor oil monopyroglutamic acid monoisostearate diester,
POE hydrogenated castor oil POE hydrogenated castor oil derivative such as maleic acid, POE beeswax lanolin derivative such as POE sorbit beeswax, coconut oil fatty acid diethanolamide,
Lauric acid monoethanolamide, alkanolamides such as fatty acid isopropanolamide, POE propylene glycol fatty acid ester, POE alkylamine, P
Examples thereof include OE fatty acid amide, sucrose fatty acid ester, POE nonylphenylformaldehyde condensate, alkylethoxydimethylamine oxide, and trioleylphosphoric acid. Of these, it is particularly preferable to use POE C12-24 alkyl ether. The content of the nonionic surfactant is 0.1 to 20.0% by weight in the gel composition.
Is preferable, and 0.1 to 10.0% by weight is particularly preferable.

As a gel composition having the above composition,
For example, Sepigel-305 (SEPIGEL-305, SEPPIC
Company brand name). The amount of the gel composition to be added to the cleaning agent is not particularly limited, but in order to fully exert the effect of the gel composition, 0.1 to 2 of the total cleaning agent is used.
0.0% by weight is preferable, and more preferably 1.0 to
It is preferable to add 10.0% by weight. If it is less than 0.1% by weight, the viscosity becomes low, and if it exceeds 20.0% by weight, the viscosity becomes too high and the function as a cleaning agent is not satisfied.

In addition to the above-mentioned essential constituents, the skin cleansing agent of the present invention contains oils and fats, waxes, fatty acids, and alcohols in a quantitative and qualitative range depending on the purpose without impairing the effects of the present invention. , Ester oils, silicone oils, humectants, UV absorbers, UV scattering agents, thickeners such as methylcellulose, surfactants, antioxidants, preservatives, antiphlogistics, vitamins, hormones, etc. It is possible to incorporate other ingredients that are incorporated into cosmetics.

[0012]

EXAMPLES Next, the present invention will be described in detail with reference to examples. Needless to say, the present invention is not limited to the following examples. All blended amounts are% by weight
Is.

Examples 1 to 3 and Comparative Examples 1 and 2 A skin cleansing agent was prepared by the following method according to the formulation as shown in Table 1 below. Here, Sepigel-305 (SEPI
GEL-305; Seppic, Inc., Fairfield, New Jersey)
Polyacrylamide, C13-14 isoparaffin, and POE7 mol lauryl ether (Laureth-7: Laureth-
It consists of 3 components of 7). With respect to the obtained skin cleanser, the stability test and the effect test were evaluated by the following methods. The results are shown in Table 2.

<Manufacturing Method> Ingredients except for Sepigel-305 are sequentially dissolved in a main kettle, and finally Sepigel-305 is added thereto, and they are uniformly mixed with a high-speed mixer. Defoam and filter to obtain a skin cleanser.

<Stability Test> The stability was evaluated in a constant temperature room at 50 ° C. ⊚: Stable without separation or separation for more than 3 months. ○: It was stable without separating or separating for more than 1 month. Δ: Stable without separation / separation for 2 weeks or more. X: Stable without separation / separation was less than 2 weeks.

<Effect test> The foundation of 20 beauty technicians was applied on the face in advance, which was hard to remove, and the cleaning agent was applied to the face, and the feeling after use was evaluated by self-report evaluation. .

Criteria 1. Ease of applying cleaning agent ◎: More than 80% of beauty technicians answered that it was easy to apply. ○: More than 60% of the beauty technicians answered that it was easy to apply. Δ: More than 40% of beauty technicians answered that it was easy to apply. X: Less than 40% of the beauty technicians answered that they were easy to put on. 2. Ease of washing off the cleaning agent ◎: More than 80% of the beauty technicians answered that it was easy to wash off. ◯: More than 60% of beauty technicians answered that they were easy to wash off. Δ: 40% or more of the beauty technicians answered that they were easy to wash off. X: Less than 40% of the beauty technicians answered that they were easy to wash off. 3. Refreshing after washing off the wash ◎: 80% or more of the beauty technicians answered that it was refreshing. ○: More than 60% of the beauty technicians answered that they were refreshed. Δ: More than 40% of beauty technicians answered that they were refreshed. X: Less than 40% of the beauty technicians answered that they were refreshed. 4. Cleaning effect of cleaning agent ⊚: More than 80% of beauty engineers answered that they were sufficiently removed. O: 60% or more of the beauty technicians answered that they were removed sufficiently. Δ: 40% or more of the beauty technicians answered that they were sufficiently removed. X: Less than 40% of the beauty technicians answered that they were sufficiently removed.

[0018]

[Table 1] ──────────────────────────────── Examples Examples Comparative Examples ─────────── ─────── 1 2 3 12 ──────────────────────────────── PEG 1500 2.0 2.0 − 2.0 − Glycerin 3.0 3.0 − 3.0 − Dipropylene glycol 5.0 5.0 5.0 5.0 5.0 Ethyl alcohol 10.0 − 10.0 − 10.0 Sepigel − 305 6.0 4.0 2.0 − − Xanthan gum − − − 0.5 − Methylcellulose − − − 2.0 − Carboxyvinyl polymer − − − − 0.5 Alginic acid Na --- 0.5-PEG400 Monoisostearic acid 5.0-5.0-5.0 PEG500 Diisostearic acid 20.0 20.0 20.0 20.0 20.0 Polyoxyethylene / methylpolysiloxane copolymer (SC1014M) 10.0 10.0- 10.0-Triethylamine --- − − 2.0 Methylparaben 0.1 0.1 0.1 0.1 0.1 EDTA 0.05 0.05 0.05 0.05 0.05 Perfume Suitable amount Suitable amount Suitable amount Suitable amount Purified water Remaining amount Remaining amount Remaining amount Remaining amount ────────────────── ───────────────

[0019]

[Table 2] ─────────────────────────────── Examples Comparative examples ──────────── ───── 1 2 3 1 2 ─────────────────────────────── Stability ◎ ◎ ◎ ○ ○ ── ───────────────────────────── Easy to put on (finger grip) ◎ ○ ○ ○ △ Easy to wash off ○ ○ ◎ △ ○ Freshness after washing ○ ○ ◎ △ ○ ─────────────────────────────── Washing effect ○ ○ ○ ○ ○ ── ─────────────────────────────

As can be seen from Table 2, excellent cleaning effects (makeup removing effect / bare skin cleaning effect) are obtained. However, Comparative Example 1 was slimy and was difficult to wash off, and Comparative Example 2 was poor in finger-removing property, and was difficult to apply, while Examples 1 to 3 were all satisfactory. Further, Comparative Examples 1 and 2 require a long time to dissolve the thickener in water, while Examples 1 to 3
At the end of the process, the gel composition was added and mixed to obtain the skin cleanser in a short time.

Example 4 Skin Cleanser Erythritol 1.0 wt% Propylmethyl taurine Na salt 20.0 2-Alkyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine 40.0 Polyoxyethylene (9 mol) Hydrogenated castor oil 10.0 Glycerin 0.5 Citric acid 0.1 Purified water Residual Sepigel-305 18.0

<Manufacturing Method> The above ingredients were sequentially added to purified water heated to 70 ° C. and dissolved, followed by stirring and cooling to 35 ° C. to obtain a skin cleansing agent.

Example 5 Skin Cleanser Erythritol 5.0% by weight Sorbitol 20.0 Polyoxyethylene (20 mol) -2-octyldodecyl ether 20.0 Glyceryl trioctanoate 45.0 Purified water Residual Sepigel-3050 .5

<Production Method> The above ingredients were sequentially added to purified water heated to 70 ° C. and dissolved, and the mixture was stirred and cooled to 35 ° C. to obtain a skin cleansing agent.

In Examples 4 and 5 as well, compared with those of Comparative Examples 1 and 2, the finger-removing property was good, they were easy to wash off, had a refreshing feel, and were easy to prepare.

[0026]

As described above, the skin cleansing agent of the present invention has good finger removability and is excellent in terms of ease of washing off and freshness after washing. Furthermore, it is a skin cleanser that can be prepared very easily and in a short time.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location C11D 3/32

Claims (5)

[Claims] 1. A skin cleansing agent comprising a gel composition comprising polyacrylamide, a hydrocarbon and a nonionic surfactant. 2. The gel composition has a molecular weight of 1,000 to
The skin cleanser according to claim 1, which comprises 5,000,000 polyacrylamide, a hydrocarbon selected from C4-20 isoparaffins, and a nonionic surfactant selected from polyoxyethylene C12-24 alkyl ether. . 3. The gel composition is compounded in an amount of 1.0 to 80.0% by weight of polyacrylamide and 1.0 of hydrocarbon.
-80.0% by weight, nonionic surfactant 0.1-2
The skin cleansing agent according to claim 1 or 2, which is 0.0% by weight. 4. The skin cleansing agent according to claim 1, wherein the gel composition is contained in an amount of 0.1 to 20.0% by weight based on the cleansing agent. 5. The skin cleansing agent according to claim 4, wherein the amount of the gel composition blended is 1.0 to 10.0% by weight based on the cleansing agent.