Composition for dyeing keratin fibres and dyeing method using same
A technology of keratin fiber and composition, which is applied in the field of keratin fiber, can solve the problems of insufficient dyeing strength, and achieve the effect of good tolerance and low dyeing selectivity
Inactive Publication Date: 2005-05-25
LOREAL SA
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the disadvantage of these direct dyes when added to coloring compositions is that the color intensity obtained is not sufficient, especially for washing hair
Method used
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Embodiment 1 and 2
[0216] ( * ): Common dye carriers:
[0217] -Ethanol 20g
[0218] - Oxyethylated nonylphenol with 9 moles of ethylene oxide by RHODIA
[0219] Product sold under the trade name IGEPAL NR 9OR by the company CHEMIE 8.0 g
[0220] -2-Amino-2-methyl-1-propanol qs pH=7.5
[0221] Each of the above ready-to-color compositions was applied to locks of naturally gray hair with 90% white hair for 30 minutes. The hair is then rinsed, washed with a standard shampoo, and dried.
[0222] Example
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The subject of the present invention is a composition ready for dyeing keratin fibres, especially human keratin fibres, such as hair, which composition contains at least one cationic substantive dye suitably selected in a medium suitable for dyeing, and at least A nitrogen-containing direct dye of benzene, and a dyeing method using the composition.
Description
technical field [0001] The present invention relates to compositions for dyeing keratin fibres, in particular human keratin fibres, such as hair, which compositions contain, in a medium suitable for dyeing, at least one cationic direct dye, suitably selected, and at least one Nitrogen-containing direct dyes of benzene, and dyeing methods using such compositions. technical background [0002] The use of dyeing compositions comprising direct dyes, in particular benzene nitrogen-containing direct dyes, for the dyeing of keratin fibers, in particular human hair, is well known. However, the disadvantage of these direct dyes when incorporated into coloring compositions is that the intensity of coloring obtained is not sufficient, especially for washing the hair. [0003] However, applicants have now found that by combining at least one suitably selected cationic direct dye and at least one benzene nitrogen-containing direct dye, it is possible to obtain new dyeing compositions wh...
Claims
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IPC IPC(8): A61K7/13A61K8/00A61K8/22A61K8/33A61K8/35A61K8/38A61K8/40A61K8/41A61K8/49A61K8/66A61Q5/10C09B29/08C09B67/22D06P3/24
CPCA61K8/418A61K8/49A61K8/492A61K8/4926A61K8/494A61K8/4946A61K8/496A61Q5/065A61Q5/10A61K8/40
Inventor C·龙多
Owner LOREAL SA