Hair bleaching and colouring compositions having a PH greater than PH 10 comprising cholesterol

A composition and cholesterol technology, applied in medical preparations containing active ingredients, hair care, cosmetics, etc., can solve problems such as not fully satisfying hair, and achieve excellent hair bleaching and/or hair dyeing with less damage

Inactive Publication Date: 2003-08-06
UNILEVER NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Hair bleaching and hair coloring compositions have heretofore not fully met the requirements for effective bleaching with minimal damage to hair, especially dark brown and black hair

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] This example demonstrates the reduction in hair damage provided by cholesterol in hair bleaching compositions at various pH's.

[0066] Step 1: Preparation of Test Bleach Solution

[0067] Two bleach solutions were prepared as follows: Solution 1 did not contain cholesterol (as a control) and Solution 2 contained cholesterol.

[0068] Material

active substance %

%w / w

amount (g)

SLES 2EO(Tegobetain CK)

25.94

8.00

30.84

CAPB (Tegobetain CK)

30

4.00

13.33

Dequest

100

0.20

0.20

Hydrogen peroxide (supplied by Sigma)

30

4.00

13.33

water (DI)

42.29

total

100.00

[0069] Material

active substance %

%w / w

amount (g)

SLES 2EO(Tegobetain CK)

25.94

8.00

30.84

CAPB (Tegobetain CK)

30

4.00

13.33

Cholesterol ...

Embodiment 2

[0086] Example 2 hair bleaching composition

[0087] Hair bleaching compositions are prepared in a conventional manner according to the formulation details below. Store the developer and base in separate bottles until use. In use, the developer and base are mixed together to form the hair bleaching compositions of the present invention having a pH greater than 10. Apply the composition to hair and leave on for 20 minutes. Hair is effectively bleached with minimal damage.

[0088] Material

[0089] Material

[0090] Hair coloring compositions are prepared in a conventional manner according to the formulation details below. Store developer and base in separate bottles until use. In use, the developer and base are mixed together to form the pH greater than 10 hair coloring composition of the present invention. Apply the composition to hair and leave on for 20 minutes. Hair is effectively colored with minimal damage.

[0091] Material

[009...

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PUM

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Abstract

A hair bleaching composition comprises: (a) a peroxygen compound; (b) a buffering agent; and (c) cholesterol and / or derivatives thereof or mixtures thereof; characterised in that the pH of the composition is greater than pH 10. The composition effectively bleaches hair whilst causing less dammage than conventional bleaches.

Description

field of invention [0001] The present invention relates to hair bleaching and coloring compositions and methods for bleaching and coloring hair. Background of the invention [0002] Hair contains the granular pigment melanin within the hair cortex. The darker the hair color observed, the higher the concentration of melanin in the hair. Chemical and natural dyes can also be used on the hair to change the observed hair color. The purpose of hair bleaching compositions is to remove the color from naturally occurring melanin pigments as well as any additional synthetic pigments applied to the hair. Hair coloring compositions typically include an agent that first removes color from the hair and a dye that subsequently dyes the decolored hair. [0003] Bleaching and coloring treatments for hair are generally associated with a number of disadvantages such as causing brittleness and damage to the hair. [0004] Damage to the hair typically manifests itself in loss of protein on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/00A61KA61K8/22A61Q5/08A61Q5/10
CPCA61Q5/08A61K8/63A61K8/22A61K2800/52A61Q5/10
Inventor T·J·马登C·弗雷托S·布朗比尔M·L·皮尔斯
Owner UNILEVER NV
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