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Hair cleansing compositions

a technology of compositions and hair, applied in the field can solve the problems of affecting the ph of hair cleansing compositions, affecting the luster of hair, and the stability of the system, and achieve the effects of good foamability, excellent stability, and effective imparting luster and softness to hair

Inactive Publication Date: 2012-02-16
KAO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a hair cleansing composition that has excellent stability, can effectively impart luster, softness, and manageability to hair, and has a good foamability and highly lubricious foam quality during washing. The composition includes a hydroxymonocarboxylic acid or salt thereof, an organic solvent selected from a specific group, and an anionic surfactant with a sulfate group. The composition has a pH of from 1 to 4 and a buffer capacity not lower than 0.005 gram equivalent / L but lower than 0.2 gram equivalent / L. The technical effects of the invention are improved stability, manageability, luster, softness, and foam quality during washing.

Problems solved by technology

No attempt has, however, been made to lower the pH of hair cleansing compositions, because the hair cleansing compositions are intended to impart neither luster nor softness in general.
A problem, however, arose in that in a low pH range, anionic surfactants as cleansing ingredients underwent decomposition, resulting in stability deterioration such as gelling of systems and reduction in foamability.
A simple application of a treatment to hair, therefore, leads to a change in the pH of the treatment solution, raising a problem that its intended effects cannot be fully brought about.

Method used

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Examples

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examples

[0045]In the following Examples and Comparative Examples, “pH” indicates a pH of a hair composition diluted 20-fold by weight with water.

example 5

Clear Shampoo

[0073]

(wt. %)Sodium POE(2) lauryl ether sulfate10.0Cationic guar gum0.1Lactic acid0.75Sodium chloride1.0Lauroylamidopropyl betaine1.0Cocoyl monoethanolamide0.3Propylene carbonate0.5Glycerin1.0Sodium hydroxideq.s. to pH 4Deionized waterBalance

[0074]The above-described shampoo (pH: 4.0, buffer capacity: 0.008) was excellent in foaming property and foam lubricity during washing, smoothness during rinsing, and hair luster and softness after drying, and was also superb in stability.

example 6

Conditioning Shampoo

[0075]

(wt. %)Sodium POE(2) lauryl ether sulfate8.0Cationic guar gum0.5Glycolic acid0.75Disodium citrate1.0Lauroylamidopropyl betaine3.0Cocoyl monoethanolamide0.7Myristyl alcohol1.0Ethylene glycol distearate3.0Polypropylene glycol (Mw = 400)0.5Glycerin1.0Deionized waterBalance

[0076]The above-described shampoo (pH: 3.5, buffer capacity: 0.01) was excellent in foaming property and foam lubricity during washing, smoothness during rinsing, and hair luster and softness after drying, and was also superb in stability.

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Abstract

A hair cleansing composition comprises the following ingredients (A) to (C): (A) a hydroxymonocarboxylic acid, or a salt thereof, (B) an organic solvent, and (C) an anionic surfactant having a sulfate group; and has a pH of from 1 to 4 when diluted 20-fold by weight with water and a buffer capacity not lower than 0.005 gram equivalent / L but lower than 0.2 gram equivalent / L. The hair cleansing composition has a good foamability and a highly lubricious foam quality during washing, and are excellent in the luster, softness and manageability of hair after drying and also superb in stability.

Description

TECHNICAL FIELD[0001]This invention relates to hair cleansing compositions, which have a good foamability and a highly lubricious foam quality during washing, and are excellent in the luster, softness and manageability of hair after drying and also superb in stability.BACKGROUND ART[0002]In hair treatments such as hair rinses and hair conditioners, it is practiced to lower the pH of their systems to impart luster and softness to hair. No attempt has, however, been made to lower the pH of hair cleansing compositions, because the hair cleansing compositions are intended to impart neither luster nor softness in general.[0003]With a view to providing hair cleansing compositions with functions to give such luster, softness and manageability as described above, the present inventors conducted research on low-pH hair cleansing compositions which made use of organic acids. A problem, however, arose in that in a low pH range, anionic surfactants as cleansing ingredients underwent decompositi...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61K8/46A61Q5/12A61K8/49A61K8/89A61K8/72A61K8/00A61K8/35A61K8/36A61K8/365A61K8/86A61Q5/02C08L83/04
CPCA61K8/34A61K8/345A61K8/35A61K8/365A61K8/39A61Q5/02A61K8/4913A61K8/4973A61K8/498A61K8/86A61K8/463
Inventor TERAZAKI, HIROYUKI
Owner KAO CORP
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