JP2006062979A - Cosmetic composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cosmetic composition capable of giving a fresh feeling with elasticity (a puffy feeling) to skin for which the composition is used, capable of giving a moist feeling to the skin, capable of being suitably used as a cleansing preparation, etc., and having an excellent touch when used. <P>SOLUTION: This cosmetic composition contains (a) one, two, or more kinds of materials selected from cationized guar gum, cationized locust bean gum, and cationized tara gum each having a nitrogen content of ≤1.6 mass% and a cationization degree per monosaccharide of 0.05-0.2, and further contains, when requested, (b) an anionic surfactant (for example, fatty acid soap, a long-chain acylether carboxylic acid salt, a long-chain acylamino acid salt, and a long-chain acyl lower alkyl-type taurine salt). <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a cosmetic composition that contains a specific cationized natural polysaccharide and that is suitably applied to lotions, skin cleansing agents, and the like.

  For cosmetics, emphasis is placed on the feel during and after use. In order to improve these usability, natural polysaccharides and cationized natural polysaccharides are used. For example, Patent Document 1 discloses a shampoo composition containing, in addition to water, (1) a surfactant, (2) a cationized guar gum having a cationic charge density of 0.001 or less, and (3) a specific amount of silicone. It has been shown that the composition imparts gloss to the washed hair and does not give a greasy feel. Patent Document 2 discloses a cleaning composition containing (1) a secondary amide type N-acylamino acid salt and (2) a cationized polymer, and the composition contains foaming property, foam quality, Excellent foam persistence and low irritation.

JP-A-4-364111 JP-A-5-156299

  However, all of the compositions proposed in Patent Documents 1 and 2 have a problem that the skin feels soft after use (the skin is elastic and fresh), which is regarded as important to the skin, and the skin is not sufficiently moist. There was a point.

  The objective of this invention is providing the cosmetic composition excellent in the use feeling which can make the skin feel after use soft and moist.

  As a result of intensive studies, the present inventors have found that a cosmetic composition containing a specific cationized natural polysaccharide can solve the above problems.

  That is, the present invention provides (a) a cationized guar gum, a cationized locust bean gum, a cation having a nitrogen content of 1.6% by mass or less and a cationization degree per monosaccharide of 0.05 to 0.2. The present invention relates to a cosmetic composition containing one or more selected from modified tara gum.

  Moreover, this invention relates to the said cosmetic composition which contains (b) anionic surfactant further.

  In the present invention, the component (b) is one or more selected from fatty acid soaps, long chain acyl ether carboxylates, long chain acyl amino acid salts, and long chain acyl lower alkyl taurine salts. The present invention relates to the cosmetic composition.

  Moreover, this invention relates to the said cosmetics composition which contains 0.05-3 mass% of (a) component, and 0.01-0.3 mass% of (b) component.

  Moreover, this invention relates to the said cosmetics composition which is 0.05 to 3 mass% of (a) component, and contains 3 to 40 mass% of (b) component which is a rinse-off type skin cleansing material.

  ADVANTAGE OF THE INVENTION According to this invention, while providing the elasticity and fresh feeling (fluffy feeling) to the skin after composition use, the cosmetic composition excellent in the use feeling which can provide a moist feeling is provided.

  Hereinafter, the present invention will be described in detail.

  The cationized natural polysaccharide as the component (a) in the present invention is a cationized guar gum having a nitrogen content of 1.6% by mass or less and a cationization degree per monosaccharide of 0.05 to 0.2. One or two or more selected from cationized locust bean gum and cationized tara gum.

  Among the above cationized natural polysaccharides, those having a degree of cationization of less than 0.05 or more than 0.2 are not preferable because they do not have a moist feeling and a fluffy feeling after use. Further, it is important that the nitrogen content by elemental analysis is 1.6% by mass or less. When the nitrogen content exceeds 1.6% by mass, proteins that are impurities derived from seed coats of natural ingredients are present in the polysaccharide, and the moist feeling and plump feeling after use are significantly reduced. The lower limit of the nitrogen content is not particularly limited, but the lower the nitrogen content derived from these impurities, the better.

  Examples of natural polysaccharides that can be generally used in cosmetics include fenucreak gum, guar gum, locust bean gum, tara gum, tamarind gum, curdlan, etc., but the guar gum, locust bean gum, tara gum used in the present invention Only when used, it feels soft and moist.

  The component (a) is “Catinal CG-100S” (manufactured by Toho Chemical Industry Co., Ltd.) as a cationized guar gum, and “Catinal CLB-100S” (manufactured by Toho Chemical Industry Co., Ltd.) as a cationized locust bean gum. “Catinal CTR-100S” (manufactured by Toho Chemical Industry Co., Ltd.) is commercially available as the cationized tara gum, and these commercially available products can be suitably used. However, it is not limited to these examples.

  (A) As for the compounding quantity of a component, 0.05-3.0 mass% is preferable with respect to cosmetics composition whole quantity, More preferably, it is 0.1-1.0 mass%. If it is less than 0.05% by mass, the feel is not sufficient, while if it exceeds 3% by mass, there is a tendency to feel sticky.

  If desired, the cosmetic composition of the present invention may further contain (b) an anionic surfactant in addition to the component (a).

  The component (b) is not particularly limited as long as it can be used in a cosmetic composition, but it is hypoallergenic and detergency from the viewpoint that it is particularly suitable for use as a skin cleanser. From the viewpoint of foaming, etc., each salt such as fatty acid soap (for example, lauric acid, myristic acid, stearic acid, sodium, potassium, magnesium, ammonium, lower alkanolamine (for example, mono, di, or triethanolamine), Long chain acyl ether carboxylates (eg, lauroyl ether carboxylic acid, myristoyl ether carboxylic acid, stearoyl ether carboxylic acid, etc., sodium, potassium, magnesium, ammonium, lower alkanolamines (eg mono, di, or triethanol) Amine) and other salts); long chain reeds Amino acid salts (e.g., lauroyl glutamic acid, myristoyl glutamic acid, stearoyl glutamic acid, lauroyl glycine, myristoyl glycine, stearoyl glycine, lauroyl alanine, myristoyl alanine, stearoyl alanine, sodium, potassium, magnesium, ammonium, lower alkanolamines (e.g. mono, dialkanol) Long chain acyl lower alkyl taurine salts (for example, N-cocoyl taurine, N-cocoyl-N-methyl taurine, N-lauroyl-N-methyl taurine, N- Myristoyl-N-methyltaurine, N-coconut oil fatty acid-N-methyltaurine, N-palm oil fatty acid-N-ethyltaurine, N-lauroyl-N-taurine, etc. Um, magnesium, ammonium, salts of lower alkanolamines (for example, mono, di, or triethanolamine); higher alkyl sulfate esters (for example, lauryl sulfate, myristyl sulfate, stearyl sulfate, sodium, potassium, etc.) , Magnesium, ammonium, lower alkanolamine (such as mono, di, or triethanolamine), etc .; monoalkyl phosphate ester salts (eg, lauryl phosphate, myristyl phosphate, stearyl phosphate, etc.) Preferred examples include sodium, potassium, magnesium, ammonium, salts such as lower alkanolamine (for example, mono, di, or triethanolamine), and the like, but are not limited to these examples. Of these, fatty acid soaps, long-chain acyl ether carboxylates, long-chain acyl amino acid salts, and long-chain acyl lower alkyl taurine salts are preferred in terms of moist and plump feeling. In each anionic surfactant, the hydrophobic part (alkyl group or acyl group) preferably has 12 to 18 carbon atoms.

  Thus, it is preferable to combine the component (a) and the component (b) because the component (a) and the component (b) form a complex and the amount attached to the skin increases.

  (B) In the case where the cosmetic composition of the present invention is a product that is not washed off after being applied to the skin (leave on), the amount of the component (b) is preferably 0.01 to 3% by mass in the total amount of the cosmetic composition. Especially preferably, it is 0.05-0.5 mass%. If the amount is less than 0.01% by mass, the effect is small. On the other hand, if it exceeds 3% by mass, the skin irritation is not preferred.

  In the case where the cosmetic composition of the present invention is a rinse-off type product (for example, facial cleanser) that is washed off after being applied to the skin, the amount of component (b) is 3 to 40 in the total amount of the cosmetic. The mass% is preferable, and 10 to 30 mass% is particularly preferable. If it is less than 3% by mass, the amount attached to the skin is not sufficient, and the effect of making the skin feel soft and moist is low. On the other hand, if it exceeds 40% by mass, the skin irritation is not preferred.

  The dosage form of the cosmetic composition of the present invention can be prepared in the form of a solid, cream, emulsion, liquid, etc., as long as it is a dosage form used in ordinary cosmetic compositions. It is not limited.

  This cosmetic composition can be used as a rinse-off type product such as a cleansing agent, or as a leave-on preparation applied as a cream or lotion, and the component (a) is present on the skin. Makes a makeup effect.

  In the cosmetic composition of the present invention, components usually used in cosmetics can be optionally added as long as the effects of the present invention are not impaired. Examples of such components include humectants such as propylene glycol, sorbitol, glycerin, 1,3-butanediol, 1,2-pentanediol, dipropylene glycol, nonionic polymer viscosity modifiers, and pearlizing agents. , Fragrances, pigments, ultraviolet absorbers, antioxidants, bactericides, anti-inflammatory agents, preservatives, and the like.

  EXAMPLES The present invention will be specifically described below with reference to examples, but the technical scope of the present invention is not limited by these examples. A compounding quantity is the mass% with respect to the composition whole quantity.

  First, the evaluation method used in this example will be described.

[Moist feeling after use]
Each sample shown in Table 1 and Tables 2 and 3 (combination lotion, face wash) was subjected to sensory evaluation on the moist feeling after use by actual use by professional panelists (10 persons). It was. The evaluation was made by calculating the average score of 10 people according to the following evaluation point criteria.
(Evaluation criteria)
5 points: moist feeling 4 points: somewhat moist feeling 3 points: normal 2 points: no moist feeling 1 point: no moist feeling

[Feeling of skin after use]
About each sample shown in Table 1 and Tables 2 and 3 (skin lotion, face wash) obtained by actual use by professional panelists (10 persons), fluffy feeling after use (the skin has elasticity) A sensory evaluation was performed on the feeling of freshness. The evaluation was made by calculating the average score of 10 people according to the following evaluation point criteria.

(Evaluation criteria)
5 points: Feeling plump 4 points: Feeling slightly plump 3 points: Normal 2 points: Not feeling slightly plump 1 point: Not feeling plump

[Foam quality]
For the samples (face wash) obtained in each of Examples and Comparative Examples shown in Tables 2 to 3, sensory evaluation was performed on foam quality (creaminess) by actual use by a professional panelist (10 persons). The evaluation was made by calculating the average score of 10 people according to the following evaluation point criteria.

(Evaluation criteria)
5 points: Foam is creamy 4 points: Foam is slightly creamy 3 points: Normal 2 points: Foam is not creamy 1 point: Foam is not creamy

[No stimulation]
For the samples (face wash) obtained in each of Examples and Comparative Examples shown in Tables 2 to 3, sensory evaluation was performed for the absence of irritation by actual use by a professional panelist (10 persons). The evaluation was made by calculating the average score of 10 people according to the following evaluation point criteria.

(Evaluation criteria)
5 points: no one felt a stimulus 3 points: felt an acceptable stimulus 1 point: felt an unacceptable stimulus

[Examples 1-4, Comparative Examples 1-4]
Each component shown in the following Table 1 was mixed to prepare a sample (skin lotion).
(Preparation method)
After the cationized natural polysaccharide was dissolved in purified water, the remaining other components were added at room temperature to prepare.

  About the obtained sample (skin lotion), the moist feeling after use and the fluffy feeling were evaluated according to the above evaluation criteria. The results are shown in Table 1.

  As is apparent from the results in Table 1, the lotion of the present invention was excellent in both moist feeling after application and plump feeling, but in the comparative example, both of these were inferior in use feeling. .

[Examples 5 to 8, Comparative Examples 5 to 13]
Each component shown in the following Tables 2-3 was mixed to prepare a sample (face wash).
(Preparation method)
A cationized natural polysaccharide was added to a solution in which all components except the cationized natural polysaccharide were mixed at 70 ° C., and the mixture was sufficiently stirred and cooled with stirring.

  About the obtained sample (rinse-off type face wash), the moist feeling after use, the fluffy feeling, the foam quality, and the absence of irritation were evaluated according to the above evaluation criteria. The results are shown in Tables 2-3.

  As is clear from the results in Tables 2 and 3, the facial cleanser of the present invention was excellent in moist feeling and plump feeling after coating, and also excellent in properties as a cleaning agent. On the other hand, these effects could not be obtained in the comparative example.

Claims (5)

  (A) Among cationized guar gum, cationized locust bean gum, and cationized tara gum having a nitrogen content of 1.6% by mass or less and a degree of cationization per monosaccharide of 0.05 to 0.2 A cosmetic composition containing one or more selected from the group consisting of:   The cosmetic composition according to claim 1, further comprising (b) an anionic surfactant.   The component (b) is one or more selected from fatty acid soaps, long-chain acyl ether carboxylates, long-chain acyl amino acid salts, and long-chain acyl lower alkyl taurine salts. Cosmetic composition.   The cosmetic composition according to any one of claims 1 to 3, comprising 0.05 to 3 mass% of the component (a) and 0.01 to 0.3 mass% of the component (b).   The makeup according to any one of claims 1 to 3, which is a rinse-off type skin cleanser containing 0.05 to 3% by mass of component (a) and 3 to 40% by mass of component (b). Composition.