JPH09208456A - Skin cleaning material composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a skin cleaning material composition capable of removing stains from a face with one time washing of the face when used to remove a make up and good in feeling in use by using an adduct of glycerol with propylene oxide together with an anion surfactant and an amphoteric surfactant. SOLUTION: This skin cleaning material agent contains (A) 1-20wt.% of an adduct of glycerol with 1-60 mole propylene oxide, (B) 5-20wt.% of an anion surfactant and (C) 5-20wt.% of an amphoteric surfactant. As the component A, an adduct obtained by adding propylene oxide to glycerol at 50-200 deg.C in the presence or absence of a catalyst such as sodium hydroxide can be used. As the component B, a higher fatty acid salt, an alkylamide ether sulfate salt, etc., can be cited. As the component C, an amphoteric surfactants of amino acid type, β-alanine type, etc., can be cited.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a skin cleansing composition. More specifically, it is excellent in affinity with cosmetics, detergency and foamability, and can be used for makeup removal to remove stains such as cosmetics and sebum satisfactorily with a single face wash. The present invention relates to a skin cleansing composition having a refreshing feeling, a good feeling in use, and a good safety to the skin.

[0002]

2. Description of the Related Art In the case of washing the skin, particularly the face or the like where cosmetics are used, there are two types of cleaning agents, one for the purpose of removing dirt such as sebum and the other for the cleansing agent for the purpose of removing cosmetics.
Different types of cleaning charges are used. These are usually cleansers to remove oily cosmetics such as lipsticks and foundations, and then cleansers such as soap with excellent cleaning properties and foaming properties to remove sebum and other stains on the skin. , It is used to remove the oily components contained in the remaining cleansing agent, and when the face is washed twice in this way, the skin feels refreshed. Although cleaning agents such as soap can remove stains, they cannot remove the cosmetics sufficiently, and cleansing agents can remove the cosmetics, but they are inevitable because they increase the solubility of the cosmetics. It contains a lot of oily ingredients, and after using it, the oily ingredients remain on the skin and the skin does not feel sticky and does not give a refreshing feeling to the skin, and in order to remove these oily ingredients, the face is washed twice. It was

In recent years, in order to eliminate such troublesomeness of washing the face twice, it has both cleansing property and cleansing property, and at the same time as removing the cosmetics, it foams to remove stains such as sebum and has a good usability. Skin cleansing agents have been proposed. These skin cleansers generally contain a component having a good affinity with the cosmetics and a component having a detergency for the target stains. It is taken out from the skin and dispersed, and water is added to make it foam to remove cosmetics and dirt such as sebum. As the skin cleansing agent used for such an application, one containing an anionic surfactant excluding polyoxyethylene diester and fatty acid soap (JP-A-7-179330) and one using a hydrophilic nonionic surfactant (special Kaihei 5-20890
5), one using a polyoxypropylene adduct of diglycerin (JP-A-6-116135) and the like are known.

[0004]

However, these conventionally known products have various problems. Conventional skin cleansing agents that have both cleansing and detergency functions have insufficient affinity for cosmetics and oily ingredients, etc., so that the cosmetics are not sufficiently removed or have strong hydrophobicity and insufficient foaming. There were drawbacks such as poor rinsing property and leaving slimy feeling on the skin after use.

The present invention has been made by paying attention to the above points, and can be applied to the skin, particularly the face such as the face to which cosmetics are adhered, to remove stains such as cosmetics and sebum well by one washing, It is an object of the present invention to provide a skin cleansing composition which is finished after use and has a refreshing feel, has a good feeling in use, and is safe for the skin.

[0006]

Means for Solving the Problems As a result of intensive studies to solve the above problems, the present inventor has found that when a propylene oxide adduct of glycerin, an anionic surfactant and an amphoteric surfactant are used in combination, a cleaning agent is obtained. It has excellent affinity, detergency and foaming properties, and can be used to remove makeup with a single face wash to remove stains such as cosmetics and sebum satisfactorily. The inventors have found that a skin cleansing composition having a good feeling and safe for the skin can be obtained, and have completed the present invention.

That is, according to the present invention, 1 to 20% by weight of glycerol oxide adduct of glycerin, 1 to 20% by weight of anionic surfactant, 5 to 20% by weight of anionic surfactant and 5-2 of amphoteric surfactant are used.
A skin cleansing composition containing 0% by weight.

The propylene oxide adduct of glycerin used in the skin cleansing composition of the present invention can be added to glycerin in an amount of 50 to 50 in the presence or absence of a catalyst such as sodium hydroxide or sodium alcoholate according to a conventional method.
A product obtained by adding propylene oxide at 200 ° C. can be used. When the addition amount of propylene oxide is 1 to 60 mol per 1 mol of glycerin, a skin cleansing composition having good affinity with cosmetics and good removability of cosmetics can be obtained, which is preferable. . Glycerin alone, which does not add propylene oxide, does not have sufficient affinity for cosmetics to remove the cosmetics sufficiently, and one in which propylene oxide is added to more than 60 mols per mol of glycerin is strongly hydrophobic. It is not preferable because it impairs the cleaning property.

Further, the content of the propylene oxide adduct of glycerin in the skin cleansing composition is preferably 1 to 20% by weight, and when the propylene oxide adduct of glycerin is contained in an amount within this range, a cosmetic composition is obtained. It is possible to obtain a skin cleansing composition with good removal of When the content of propylene oxide adduct of glycerin is less than 1% by weight, a skin cleansing composition having less oily components and insufficient removability of cosmetics is obtained, and when the content exceeds 20% by weight, the composition is washed. A skin cleansing composition which gives a slimy feel to the after skin is not preferred.

Next, as the anionic surfactant used in the skin cleansing composition of the present invention, higher fatty acid salt, alkylamide ether sulfate salt, alkyl ether sulfate, alkyl sulfate, alkane sulfonate, α-olefin sulfone Acid salt, alkyl sulfosuccinate, N
Examples include anionic surfactants such as -methylalanine, N-methyltaurine, N-methylsarcosine, and polyoxyethylene alkyl ether phosphate, and one or more selected from these anionic surfactants are used. be able to. Examples of the higher fatty acid residue, alkyl group, alkane group, and olefin group include saturated and / or unsaturated hydrocarbon groups having 8 to 22 carbon atoms. These groups may be linear or branched. May be Further, examples of the salt include alkali metal salts such as sodium salt and potassium salt, trialkanolamine salt and the like.

The content of the anionic surfactant in the skin cleansing composition is preferably 5 to 20% by weight, and when the anionic surfactant is contained in this range, the amount of the anionic surfactant against cosmetics and sebum stains is reduced. It is possible to obtain a skin cleansing composition which is excellent in detergency and can give a refreshing feeling to the skin after washing. When the content of the anionic surfactant in the skin cleansing composition is less than 5% by weight, the detergency is poor, and when the content exceeds 20% by weight, the skin cleansing agent gives a taut feeling to the skin after washing. A composition is obtained, which is not preferable.

Next, as the amphoteric surfactant used in the skin cleansing composition of the present invention, amino acid type amphoteric surfactant, β
Examples thereof include an alanine-type amphoteric surfactant, an alkylbetaine-type amphoteric surfactant, an amidobetaine-type amphoteric surfactant, and an imidazolinium-betaine-type amphoteric surfactant. Examples of the acyl group, alkyl group and amide group constituting the amphoteric surfactant include saturated and / or unsaturated hydrocarbon groups having 8 to 22 carbon atoms. These groups may be linear or branched. It may be a shape. Further, these amphoteric surfactants may be used as alkali metal salts such as sodium salt and potassium salt, and trialkanolamine salts.

The content of the above-mentioned amphoteric surfactant in the skin cleansing composition is preferably 5 to 20% by weight, and when the amphoteric surfactant is contained in this range, the foaming power and the detergency are good. An excellent skin cleansing composition is obtained. If the content of the amphoteric surfactant in the skin cleansing composition is less than 5% by weight, the degreasing power of the anionic surfactant becomes strong, and the skin cleansing composition gives the skin a feeling of being taut or bulky after washing. If the content is more than 20% by weight, a skin cleansing composition which gives a slimy or sticky feeling to the skin after washing is not preferable.

The skin cleansing composition of the present invention is a composition containing the above-mentioned propylene oxide adduct of glycerin, an anionic surfactant and an amphoteric surfactant in predetermined amounts, and each of these components is heated or heated. Obtained by dissolving in warm water. The components may be dissolved in water or warm water from any one, and the order thereof is not limited. The concentration as an aqueous solution is preferably 10 to 40% by weight, and its pH is 6.
5-8 are preferable. Examples of the adjusting agent used when adjusting the pH to 6.5 to 8 include alkaline compounds such as sodium hydroxide, potassium hydroxide and aqueous ammonia, and acidic compounds such as hydrochloric acid, phosphoric acid, acetic acid and citric acid.

The skin cleansing composition of the present invention is mainly composed of the propylene oxide adduct of glycerin, an anionic surfactant and an amphoteric surfactant, but if necessary, a nonionic surfactant and a cation. Surfactant,
Antibacterial agents, fragrances, sequestering agents, foaming agents, moisturizers, dispersion stabilizers, emulsifiers, bactericides, cooling stimulants, thickeners,
Preservatives, appearance modifiers, solubilizers, protein derivatives, plant extracts, antioxidants, UV absorbers and the like can be used in combination, and even if these bases are used in combination, their cleaning and foaming properties are improved. It never drops.

The skin cleansing composition of the present invention is excellent in detergency, foaming property and safety, has good removability of cosmetics containing a large amount of oil and sebum and dirt, and has good usability and finish. Thus, it can be used for makeup remover, etc. without the skin becoming tight or bulky after use and having no slimy or sticky feeling.

Hereinafter, the present invention will be described in more detail by way of examples, but the present invention is not limited to these as long as the gist thereof is not exceeded. Hereinafter, "%" represents "% by weight".

【Example】

Examples 1 to 4 and Reference Examples 1 to 8 Propylene oxide adducts of glycerin shown in Table 1,
Anionic surfactants and amphoteric surfactants are shown in Table 2,
The amounts shown in Table 3 were sequentially added to hot water and dissolved to obtain a skin cleansing composition. The skin cleansing composition thus obtained was subjected to a foaming and stability test, a cosmetics removal test, and a protein denaturation test to evaluate its performance and safety. The types of raw materials used for preparing the skin cleansing composition are shown in Table 1, the evaluation results of performance are shown in Tables 2 and 3, and the test methods of performance and safety are shown below.

[0019]

[Table 1]

[0020]

[Table 2]

[0021]

[Table 3]

A method for testing foamability and foam stability. According to JIS-K-3362-6.5, the sample concentration is 1
%, A liquid temperature of 40 ° C., water having a hardness of 50 ppm, and PH was not prepared.

Method for removing cosmetics. A female panelist uses a lipstick, an eyeshadow, and a blusher containing tar pigments and natural pigments to make up the face, and after 2 hours of makeup, the skin cleansing composition 3 m
1 was smeared, and water was further added to foam the mixture, which was then rinsed off. The panelists evaluated the degree of removal of the cosmetics after washing, the feeling of freshness of the skin, the feeling of tightness, and the feeling of sliminess according to the following evaluation criteria. Panel wash 1
The results were evaluated by the most panelists and adopted by 0 people.

Evaluation criteria of cosmetic removability. ：: good. Δ: Slightly defective. X: Poor.

Evaluation criteria for a refreshing feeling. ：: good. Δ: Slightly defective. X: Poor.

Evaluation criteria for a crisp feeling. ○: None Δ: Somewhat. X: Yes

Evaluation criteria for sliminess. ○: None Δ: Somewhat. X: Yes

A method for testing protein denaturability. Protein denaturation is performed by the HPLC method (Miyazaki et al., J. Soc. Cos.
met. Chem. Japan. Vol. 18. NO.
According to 2), the protein denaturation rate was measured using ovalbumin at a sample concentration of 1%.

Comparative Example 1 Using a commercially available product, a cosmetic removal test was conducted in the same manner as in Example 1. Table 3 shows the results.

[0030]

As described above, the skin cleansing composition of the present invention uses the propylene oxide adduct of glycerin, the anionic surfactant and the amphoteric surfactant in combination, and has a conventional cleansing property. Compared to detergent compositions, it has excellent affinity with cosmetics, cleanability, and foamability,
It can be used for make-up removal etc. to remove dirt such as cosmetics and sebum at the same time with a single face wash, and after use there is no feeling of tightness, bulkiness, sliminess or stickiness, and irritation to the skin. And a composition excellent in stability as well.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Internal reference number FI Technical indication C11D 1:90 1:04 1:10 1:12 1:28) (72) Inventor Akio Nakajima Tokyo 4-66-1 Horikiri, Katsushika-ku, Tokyo Within Miyoshi Oil & Fat Co., Ltd. (72) Inventor Katsuhisa Kamio 1 No. 1 Nishide, Noyose-cho, Iwakura-shi, Aichi Nagoya Factory, Miyoshi Oil & Fat Co., Ltd. (72) Masayoshi Kawashima, Aichi 1 1 Nishiide, Noyose-cho, Iwakura-shi, Japan Miyoshi Oil & Fat Co., Ltd. Nagoya factory (72) Inventor Masafumi Moriya 4-66-1, Horikiri, Katsushika-ku, Tokyo Miyoshi Oil & Fat Co., Ltd.

Claims (1)

[Claims] 1. A glycerin 1 to 60 mol propylene oxide adduct 1 to 20% by weight, an anionic surfactant 5
% To 20% by weight and 5 to 20% by weight of an amphoteric surfactant.