Process for straightening and bleaching hair

A hair and color bleaching technology, applied in hair care, hairdressing equipment, medical formula, etc., can solve the problems described

Active Publication Date: 2015-07-08
KAO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, the combination of these straightening and hair bleaching methods has not been described in the prior art

Method used

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  • Process for straightening and bleaching hair
  • Process for straightening and bleaching hair
  • Process for straightening and bleaching hair

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0116]

Embodiment 2

[0118]

[0119]

[0120] Before applying to the hair, mix the bleaching powder with 12% H 2 o 2 The aqueous solutions were mixed in a 1:1 weight ratio. The straightening composition described in Example 1 was used as the straightening composition.

Embodiment 3

[0122]

[0123] Before applying to the hair, mix the bleaching powder with 9% H 2 o 2 The aqueous solutions were mixed in a 1:1 weight ratio. The straightening composition described in Example 1 was used as the straightening composition.

[0124] The above compositions of Examples 1 to 3 were used to straighten and lighten or bleach hair. It was observed that the stress-strain values ​​of hair fibers that were lightened or bleached after straightening the hair were similar to untreated hair, clearly indicating a surprising restoration of the mechanical properties of the hair.

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Abstract

The present invention relates to a method for semipermanent straightening and bleaching of the hair in two steps, which are carried out one after another in one salon visit. For this purpose, the method of the present invention uses a first composition (straightening composition) comprising at least one carboxylic acid of the Formula (I) and a second composition, (bleaching composition) comprising least one oxidizing agent and at least one alkalizing agent. The hair is treated with the said compositions successively, so that the bleaching treatment is performed directly after the straightening treatment.

Description

technical field [0001] The present invention relates to a method for semi-permanent straightening and bleaching of hair in two steps. Background technique [0002] One known method for straightening curly or frizzy hair involves the use of a straightening iron. The high temperature of the iron causes the breaking of hydrogen bonds in the keratin of the hair, resulting in temporary straightening. Hydrogen bonds are formed again by the action of moisture, so that the hair returns to its original shape over time due to air humidity, and the straightening effect disappears after washing the hair. [0003] The morphology of hair is largely determined by the disulfide bonds linking the two cysteine ​​moieties of hair keratin. In order to achieve a more permanent styling of the hair, known methods involve the cleavage of disulfide bonds by the action of reducing agents comprising thioether or thio groups. After bringing the hair into the desired shape, the hair shape is fixed by...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/365A61Q5/04A61Q5/08A61K8/19A61K8/22
CPCA61K8/19A61K8/365A61Q5/04A61Q5/08A61K2800/884A45D7/04A61K8/22
Inventor B·罗泽J·伍德
Owner KAO CORP
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