JP2019077642A - Creamy skin cleanser - Google Patents

Abstract

To provide a creamy skin cleanser which has good preservation stability while having moderate hardness and excellent compatibility with water and foamability and gives no creaking feeling or tense feeling to the skin after washing away and gives moist touch feeling to the skin.SOLUTION: There is provided a creamy skin cleanser comprising a component (A) lauric acid, a component (B) a tocopheryl phosphate and a component (C) a polyoxyethylene methyl glucoside, which has good preservation stability while having moderate hardness and excellent compatibility with water and foamability and gives no creaking feeling or tense feeling to the skin after washing away and moist touch feeling to the skin.SELECTED DRAWING: None

Description

  The present invention relates to a creamy skin cleanser. Specifically, creamy skin which has a moderate hardness and good storage stability, is compatible with water, is excellent in foamability, and gives a moist feeling without giving a squeaky feeling or a firm feeling to the skin after being washed away It relates to the cleaning fee.

  Skin cleansers are used to remove excess sebum and waste products, stains and keep the skin healthy. Conventionally, solid soaps are most widely used as skin cleansers, but cream-like skin cleansers are often used for cleaning the face in terms of usability. The creamy skin cleanser is generally based on fatty acid soaps such as potassium salts of higher fatty acids, and a creamy dosage form can be obtained by combining fatty acids having 12 to 22 carbon atoms. it can.

  In the above creamy skin cleanser, in order to improve water compatibility and foamability, it is desirable to contain a large amount of lauric acid having a small number of carbons. However, on the other hand, a creamy skin cleanser containing a large amount of lauric acid has a strong squeaky feeling and a firm feeling, and there is a problem with the feel of the skin after washing off. Furthermore, the storage stability tends to deteriorate, such as changing from creamy to liquid at high temperature.

  As a specific attempt to solve this problem, a cream comprising a combination of lauric acid, myristic acid and palmitic acid as a higher fatty acid in a specific ratio and further containing potassium hydroxide in a ratio of 75 to 90% of the total neutralization of fatty acid -Like skin cleanser (Patent Document 1) is disclosed, but it is not sufficient in feel and storage stability of the skin after washing out. Also, as a method of reducing squeakiness and firmness after washing off, a technique of incorporating a cationic polymer (patent document 2) is disclosed, but when a polymer is blended in a creamy skin cleansing agent, it becomes compatible with water and There is a problem that foamability worsens.

  On the other hand, tocopheryl phosphate is known to exhibit physiological activity equal to or higher than that of tocopherol by being metabolized in the living body. Moreover, when it mix | blends with a skin external preparation, showing that a wrinkles prevention effect (patent document 3), a whitening effect (patent document 4), an active oxygen scavenging effect (patent document 5), etc. is reported. However, in the prior art related to these tocopheryl phosphates, the effect of improving the usability and storage stability of a creamy skin cleanser containing lauric acid is not known.

JP 10-182419 A Patent document 1: JP-A-2001-064678 Patent document 1: JP 2008-007428 Patent Document 1: Japanese Patent Application Laid-Open No. 2004-026817 Japanese Patent Application Laid-Open No. 2006-232767

  The object of the present invention is to solve the above-mentioned problems, to have good hardness while maintaining storage stability, to be compatible with water, to be excellent in foamability and not to give a squeaky feeling or a feeling of firmness to the skin after washing An object of the present invention is to provide a creamy skin cleanser which imparts a moist feeling.

That is, the present invention
(A) lauric acid,
(B) tocopheryl phosphate,
(C) A creamy skin cleanser characterized by containing polyoxyethylene methyl glucoside.

  The present invention also provides a creamy skin cleanser characterized by containing (D) an amino acid surfactant.

  The creamy skin cleanser according to the present invention has good hardness while maintaining good storage stability, is water-friendly, is excellent in foamability, and gives a moist and dry feeling to the skin after washing off, and is moist It is a creamy skin cleanser that gives a feeling.

  Although content of (A) lauric acid of this invention is not specifically limited, Preferably it is 3 to 10 weight%. If it is less than 3% by weight, the effect of enhancing the water compatibility and foamability may not be obtained. On the other hand, if it exceeds 10% by weight, the base may not be given sufficient hardness or storage stability may be deteriorated.

  The (B) tocopheryl phosphate of the present invention is not particularly limited, but is preferably sodium salt, disodium salt, potassium salt, dipotassium salt, triethanolamine salt, and more preferably sodium salt.

  The content of (B) tocopheryl phosphate is not particularly limited, but is preferably 0.01 to 2% by weight, and more preferably 0.1 to 1% by weight. If the amount is less than 0.01% by weight, the effect of reducing the feeling of skin squeakyness and firmness after washing off may not be obtained, or the effect of enhancing the storage stability may not be expected. On the other hand, even if it exceeds 2% by weight, the effect of reducing the feeling of squeezing and feeling of firmness and the effect of improving storage stability can not be obtained, which is uneconomical.

  As a commercial item of (B) tocopheryl phosphate, "Tocopheryl sodium phosphate (TPNa)" (made by Showa Denko KK) etc. are mentioned, for example.

  Specifically, (C) polyoxyethylene methyl glucoside in the present invention is polyoxyethylene (10) methyl glucoside, polyoxyethylene (20) methyl glucoside or the like. GLUCAM (TM) E-10 HUMECTANT or GLUCAM (TM) E-20 HUMECTANT (manufactured by Nippon Lubrizol Corporation), Macbiobright MG-10E, Macbiobright MG-20E (manufactured by NOF Corporation), etc. as commercial products Can be mentioned.

  The content of (C) polyoxyethylene methyl glucoside is not particularly limited, but is preferably 1 to 5% by weight. If the content of polyoxyethylene methyl glucoside is less than 1% by weight, the base may not be provided with sufficient hardness or the effect of enhancing the storage stability may not be expected. On the other hand, when the content of polyoxyethylene methyl glucoside exceeds 5% by weight, the base may be hard and the water compatibility may be deteriorated.

  The (D) amino acid-based surfactant of the present invention is not particularly limited. For example, coconut oil fatty acid acyl glycine salt, coconut oil fatty acid sarcosine salt, coconut oil fatty acid glutamate salt, coconut oil fatty acid methyl alanine salt, lauroyl methyl glycine salt Lauroyl sarcosine salt, lauroyl glutamate salt, lauroyl aspartate salt, lauroyl methyl alanine salt are mentioned, Preferably it is an amino acid system surfactant which has a C12 acyl group, More preferably, it is lauroyl methyl alanine salt.

  The content of the (D) amino acid surfactant is not particularly limited, but is preferably 1 to 8% by weight. If it is less than 1% by weight, the effect of enhancing the water familiarity and foamability may not be expected. On the other hand, even if it exceeds 8% by weight, the foamability can not be further enhanced, which is uneconomical.

  Furthermore, the creamy skin cleanser according to the present invention does not impair the effects of the invention, and according to the purpose of use, the cream, skin care agent, chelating agent, moisturizing agent such as higher alcohol and polyhydric alcohol, anti-inflammatory of dipotassium glycyrrhizinate It is possible to appropriately contain an agent and other various water-soluble and oil-soluble components according to the purpose.

  The effects of the present invention will be described with specific examples. These examples illustrate the effects and do not limit the scope of the invention. In addition, about content, it represents with weight% unless there is other specification.

The creamy skin cleanser shown to Tables 1-4 was prepared by the method shown below.
(Preparation method)
Component a was heated at 70-75 ° C., and while stirring, the mixture of component b was added little by little to component a to saponify, then component c was added and cooled to 30 ° C. to prepare.

(Use feeling evaluation method)
Using a cream skin cleansing agent filled in a tube container, 20 expert panels were used to evaluate "water-friendliness", "foaming", "feeling of squeakyness and firmness" and "hardness of the base". The bore of the tube container was 5 mm. Evaluation criteria are as follows.
[Evaluation of water familiarity]
◎: 16 or more evaluated it as being familiar with water.
○: 11 to 15 evaluated that the water familiarity was good.
Δ: 6 to 10 evaluated that the water familiarity was good.
X: Five or less people evaluated that water familiarity was good.
[Evaluation of foaming]
◎: 16 or more people evaluated that foaming was good.
○: 11 to 15 people evaluated that foaming was good.
Δ: 6 to 10 people evaluated that foaming was good.
X: Five or less people evaluated that foaming was good.
[Evaluation of feeling of feeling squeezed and feeling of feeling]
◎: 16 or more people evaluated after washing that there was no squeaky feeling or firm feeling.
○: 11 to 15 people evaluated that there was no squeaky feeling and firm feeling after washing.
[Delta]: 6 to 10 people evaluated that there was no squeaky feeling and no crunchy feeling after washing.
X: Five or fewer people evaluated that there was no squeaky feeling or firmness feeling after washing.
[Evaluation of base hardness]
◎: 16 or more people evaluated that hardness was easy to take out.
○: 11 to 15 people evaluated that the hardness was easy to put out.
Fair: 6 to 10 people evaluated that the hardness was easy to take out.
X: 5 or less people evaluated that hardness was easy to put out.
(Storage stability evaluation method)
The creamy skin cleanser of each Example and Comparative Example was filled in a tube container with a diameter of 5 mm and stored in a thermostat at 5 ° C. and 40 ° C. for 4 weeks.
[Evaluation of storage stability]
:: At any temperature, there is no change in hardness compared to before storage.
○: At any temperature, there is a slight change in hardness compared to that before storage, but the ease of removal from the tube does not change.
Δ: At any temperature, there is a change in hardness compared to that before storage, and it is difficult to come out of the tube a little.
X: At any temperature, there is a clear change in hardness compared to that before storage, and it is difficult to pull out of the tube or it drips down.

  From the results of Table 1, when lauric acid was contained as shown in each example, satisfactory results were obtained in all the items evaluated. On the other hand, as shown in Comparative Example 1, in the case where lauric acid was not contained, satisfactory results regarding water compatibility and foaming were not obtained.

  From the results of Table 2, when sodium tocopheryl phosphate was contained as shown in each example, satisfactory results were obtained in all the items evaluated. On the other hand, as shown in Comparative Example 2, when it does not contain sodium tocopheryl phosphate, or as shown in Comparative Example 3, when tocopherol is used instead of sodium tocopheryl phosphate, the squeaky feeling and firmness I did not get a satisfactory result about the feeling.

  From the results of Table 3, when polyoxyethylene methyl glucoside was contained as shown in each Example, satisfactory results were obtained in all the items evaluated. As shown in Comparative Example 4, when polyoxyethylene methyl glucoside is not contained, or as shown in Comparative Examples 5 and 6, when diglycerin or sorbitol is used instead of polyoxyethylene methyl glucoside, the base is obtained. Satisfactory results were not obtained for hardness and storage stability. Furthermore, as shown in Comparative Example 7, when both of tocopheryl phosphate and polyoxyethylene methyl glucoside are not contained, not only the hardness and storage stability of the base but also the squeakyness and firmness are satisfied. The result was not obtained.

  From the results shown in Table 4, when the amino acid surfactant lauryl methylalanine sodium or coconut oil fatty acid acylglycine potassium was contained as shown in each example, satisfactory results were obtained in all the items evaluated. . Furthermore, when an amino acid surfactant is contained, polyoxyethylene does not contain an amino acid surfactant as shown in Example 16 and polyoxyethylene instead of an amino acid surfactant as shown in Example 22. Compared with the case of using sodium lauryl ether sulfate, the result was obtained that the water compatibility and bubbling were improved.

* 1: GLUCAM (TM) E-20 HUMECTANT
* 2: Alanone ALE
* 3: Solbit D-70
* 4: Amylite GCK-12
* 5: Sinoline SPE-1300

  Hereinafter, examples of the creamy skin cleanser according to the present invention will be described. Satisfactory results were obtained in all the items evaluated in any of Examples 23 to 25.

(Example 23; creamy face wash)
(Component) (wt%)
1. Lauric acid 5.0
2. Myristic acid 20.0
3. Palmitic acid 10.0
4. Glycol stearate 2.0
5. Glycyrrhetinic acid 0.1
6. Sodium tocopheryl phosphate 1.0
7. Glycerin 20.0
8. Diglycerin 5.0
9. Polyoxyethylene (20) methyl glucoside 3.0
10. Sodium tripolyphosphate 0.1
11. Purified water residue 12. Potassium hydroxide 7.2
13. Cocoyl methyl taurine sodium solution (30%) 5.0
14. Lauroyl methyl alanine sodium solution (30%) 5.0
15. Plant extract extract appropriate amount 16. Appropriate amount of perfume (preparation method)
Ingredients 1-10 are warmed to 70-75 ° C and the mixture of ingredients 11, 12 is added little by little to ingredients 1-10 while stirring, then ingredients 13-16 are added and cooled to 30 ° C.

(Example 24; creamy face wash)
(Component) (wt%)
1. Lauric acid 4.0
2. Myristic acid 19.0
3. Palmitic acid 6.0
4. Stearic acid 5.0
5. Glycol distearate 1.0
6. Ceramide NG 0.001
7. Sodium tocopheryl phosphate 1.0
8. Glycerin 23.0
9. Diglycerin 4.0
10. Polyoxyethylene (10) methyl glucoside 3.0
11. Edetate tetrasodium 0.1
12. Purified water residue 13. Potassium hydroxide 7.2
14. Cocamidopropyl betaine solution (31%) * 6 5.0
15. Lauroyl methyl alanine sodium solution (30%) 5.0
16. Appropriate amount of perfume (preparation method)
Ingredients 1-11 are warmed to 70-75 ° C. and the mixture of ingredients 12, 13 is added little by little to ingredients 1-11 while stirring, then ingredients 14-16 are added and cooled to 30 ° C.
* 6: Anholex CB-1

(Example 25; Cleaning agent for creamy body)
(Component) (wt%)
1. Lauric acid 5.0
2. Myristic acid 15.0
3. Stearic acid 10.0
4. Glycol distearate 4.0
5. Sodium tocopheryl phosphate 1.0
6. Glycerin 23.0
7. Diglycerin 4.0
8. Polyoxyethylene (20) methyl glucoside 5.0
9. Edetate tetrasodium 0.1
10. Guar hydroxypropyltrimonium chloride 0.2
11. Purified water residue 12. Potassium hydroxide 6.9
13. Cocamidopropyl betaine solution (31%) 10.0
14. Lauroyl methyl alanine sodium solution (30%) 10.0
15. Appropriate amount of perfume (preparation method)
Ingredients 1-10 are warmed to 70-75 ° C and the mixture of ingredients 11, 12 is added little by little to ingredients 1-10 while stirring, then ingredients 13-15 are added and cooled to 30 ° C.

According to the invention
(A) lauric acid,
(B) tocopheryl phosphate,
(C) By containing polyoxyethylene methyl glucoside, storage stability is good while having appropriate hardness, and it is excellent in water compatibility and foamability and gives a squeezed feeling and a firm feeling to the skin after washing away A creamy skin cleanser is obtained which imparts a moist feel.

Claims (3)

(A) lauric acid,
(B) tocopheryl phosphate,
(C) A creamy skin cleanser characterized by containing polyoxyethylene methyl glucoside. The creamy skin cleanser according to claim 1, which comprises (D) an amino acid surfactant. 3 to 10% by weight of component (A), 0.01 to 2% by weight of component (B), 1 to 5% by weight of component (C), and 1 to 8% by weight of component (D) The creamy skin cleanser according to claim 1 or 2.