Patent ID: 6730133
Filing Date: 2004-05-04
Classification: A61K,A61Q

Abstract:
A composition for the oxidation dyeing of keratinous fibres comprising:(a) at least one oxidation dye; and (b) at least one enzymatic system comprising (i) at least one sol-gel matrix and at least one enzyme immobilized in said at least one sol-gel matrix and optionally (ii) at least one donor for said at least one enzyme, wherein said at least one enzyme is chosen from: (i) 2-electron oxidoreductases; (ii) 4-electron oxidoreductases; and (iii) peroxidases; with the proviso that when said at least one enzyme is chosen from 2-electron oxidoreductases, said at least one enzymatic system comprises at least one donor for said at least one enzyme, and with the proviso that when said at least one enzyme is chosen from peroxidases, said at least one enzymatic system further comprises at least one source of hydrogen peroxide chosen from hydrogen peroxide and at least one enzymatic system which generates hydrogen peroxide in situ, in a medium suitable for said oxidation dyeing.