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Hair straightening composition

A composition and hair technology, applied in the directions of hair care, pharmaceutical formulations, cosmetic preparations, etc., can solve the problems of rough hair, damage to hair, lack of maintenance, etc.

Inactive Publication Date: 2009-11-18
UNILEVER NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main problem with hair straightening creams, especially those based on hydroxide ions, is that they damage the hair, thus leaving the hair treated with them feeling rough and unmaintained

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0037] Base composition:

[0038] 0.35M (3.57%) γ-thiobutyrolactone

[0039] 0.44M acid (see table below)

[0040] Liquid monoethanolamine (adjust to pH 9.5)

[0041] 10% n-Ethanol

[0042] water, to 100%

[0043] The composition was prepared by adding gamma-thiobutyrolactone to an ethanol water mixture (75% by weight of water), followed by the addition of acid. The monoethanolamine (in the remaining portion of water) is added last.

[0044] Approach:

[0045] - Prepare the solution and use immediately.

[0046] - Immerse about 1 g of hair in 50 ml of solution (50:1 solution to hair).

[0047] -Leave it for 5min, then remove from solution and manually straighten / flatten, then immediately return to solution.

[0048] - Repeat until the total time of treatment (after initial immersion) is 20 min (ie 4 times).

[0049] - The hair was then washed 3 times with a standard neutralizing shampoo (essentially 14:2 SLES:CAPB), each wash consisting of rubbing about 1 ml of said s...

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PUM

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Abstract

A hair straightening composition comprising: i) gamma- thiobutyrolactone; ii) an acid or salt thereof; and iii) an amine. A method for lanthionizing keratin fibres to achieve relaxation of said keratin fibres in which said composition is applied to the hair.

Description

technical field [0001] The present invention relates to compositions and methods for straightening hair. Background technique [0002] Products known as "hair straightening creams" loosen or straighten naturally curly or curly hair. Hair straightening creams can be applied by a professional in a hair salon or by an individual consumer at home. [0003] Hair straightening creams generally contain an alkaline agent, usually a source of hydroxide ions, to straighten the hair. The term "lanthionizing" is used when referring to hair relaxation or straightening by hydroxide ions, since this straightening reaction procedure using hydroxide ions results in the formation of lanthionine residues. [0004] The main problem with hair straightening creams, especially those based on hydroxide ions, is that they damage the hair, thus leaving the hair treated with them feeling rough and unmaintained. [0005] WO 02 / 085317 discloses compositions and methods for lanthionizing keratin fiber...

Claims

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Application Information

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IPC IPC(8): A61Q5/04A61K8/20A61K8/24A61K8/36A61K8/365A61K8/41A61K8/49
CPCA61K8/20A61K8/365A61K8/36A61K8/466A61Q5/04A61K8/24A61K8/41A61K8/4986
Inventor P·卡潘特E·霍什德尔C·A·泰勒
Owner UNILEVER NV
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