Patent ID: 6190421
Filing Date: 2001-02-20
Classification: A61K,A61Q

Abstract:
A process for dyeing keratin fibers comprising applying an extemporaneous mixture to said keratin fibers, wherein said extemporaneous mixture comprises:(a) composition (a) containing at least one oxidation dye precursor and optionally at least one coupler, in a medium suitable for dyeing;(b) composition (b) in powder form containing at least one cationic direct dye, optionally dispersed in an excipient chosen from organic excipients and inorganic excipients; and(c) composition (c) containing at least one oxidizing agent in a medium suitable for dyeing,wherein composition (a), composition (b) and composition (c) are mixed extemporaneously at the time of application to said keratin fibers in a weight ratio of 1/0.01/0.5 to 1/1/4 respectively, andwherein the organic excipients and inorganic excipients are in either pulverulent or powder form.