公开(公告)号：US10993899B2

公开(公告)日：2021-05-04

申请号：US16061907

申请日：2016-12-16

Applicant: L'OREAL

Inventor： Christian Blaise ,  Abel Messavussu

IPC: A61Q5/10 ,  A61K8/49 ,  A61Q5/06

Abstract: The invention relates to a process for dyeing and/or lightening keratin fibres using direct dyes of styryl or naphthyl-amide type bearing a (C1-C18)aminoalkyl group. The dyeing process and the composition according to the invention make it possible in particular to obtain long-lasting, intense, chromatic and/or homogeneous colouring on the keratin fibres.

公开(公告)号：US10888510B2

公开(公告)日：2021-01-12

申请号：US16472165

申请日：2017-12-20

Applicant: L'Oreal

Inventor： Christian Blaise ,  Hervé David

IPC: A61Q5/10 ,  A61K8/49 ,  A61Q5/06

Abstract: The present invention relates to a process for dyeing keratin fibres, in particular human keratin fibres such as the hair, using one or more particular 2- or 4-azopyridinium dyes and one or more fluorescent dyes. The present invention also relates to a cosmetic composition comprising the dyes defined above, and also to a multi-compartment device containing said dyes. The present invention also relates to the use of said dyes for dyeing light keratin fibres, especially human keratin fibres such as the hair, in chestnut-brown, dark chestnut-brown, brown, brown with a glint, or even black, without using an additional dye other than those defined above.