The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 26, 2026
Filed:
Mar. 10, 2022
L'oreal, Paris, FR;
L'Oreal, Paris, FR;
Abstract
The present invention relates to a process for colouring hair keratin fibers, in particular the hair, comprising the application of a composition A and a composition B to said hair keratin fibers, in which: composition A comprises at least one (poly)carbodiimide compound, and composition B comprises: at least one associative polymer; and at least one compound, different from the associative polymers, containing at least one carboxylic acid group; at least one compound, preferably at least two compounds, containing at least one hydroxyl function; composition A and/or composition B comprising at least one colouring agent chosen from pigments, direct dyes and mixtures thereof; and in which composition A and composition B are applied simultaneously or sequentially to the hair keratin fibers. The present invention also relates to a device for colouring hair keratin fibers.