Dye-containing mass, composition containing it and method for dyeing keratin fibers, especially human hair
AssigneeWella Aktiengesellschaft
InventorsHans-Jurgen Braun, Pascal Andre Semadeni
Life of this patent
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Abstract
The dye-containing mass contains or consists of a compound of formula I: ##STR1## wherein R represents a DL-, D- or L-aldopyranose or a DL-, D- or L-ketopyranose, and X and Y, independently of each other, each represent a hydrogen atom, a halogen atom, a hydroxy group or an alkoxy group with from 1 to 4 carbon atoms; and, if needed, a direct-dyeing dye compound. The ready-to-use hair dye composition according to the invention is obtained by mixing this dye-containing mass with a hydrolase enzyme, e.g. a .beta.-galactosidase. The method for dyeing hair includes applying this ready-to-use hair dye composition to the hair.
Claims12
A dye-containing mass comprising a cosmetic carrier and from 0.001 to 10 percent by weight of 5-bromo-4-chloro-3-indolyl-.beta.-D-galactoside.
A hair dye composition made by mixing, immediately prior to use, a hydrolase enzyme together with a dye-containing mass containing a compound of formula I:
- ##STR3## wherein R represents a DL-, D- or L-aldopyranose or a DL-, D- or L-ketopyranose, and X and Y, independently of each other, each represent a hydrogen atom, a halogen atom, a hydroxy group or an alkoxy group with from 1 to 4 carbon atoms.
A method of dyeing hair, said method comprising the steps of:
- a) providing a hair dye composition made, immediately prior to use, by mixing a hydrolase enzyme with a dye-containing mass containing a compound of formula I:
- ##STR4## wherein R represents a DL-, D- or L-aldopyranose and/or a DL-, D- or L-ketopyranose, and X and Y, independently of each other, each represent a hydrogen atom, a halogen atom, a hydroxy group or an alkoxy group with from 1 to 4 carbon atoms;
- b) applying said hair dye composition to hair to be dyed;
- c) allowing said hair dye composition to act on the hair for 10 to 45 minutes at a temperature of from 15 to 50.degree. C.;
- and then
- d) rinsing the hair with water and then drying the hair.
Dependencies are inferred from the claim text.