01.04.08
Patent No. US 7,303,591 B2:
A composition comprising at least one mixed dye comprising at least two chromophores of (hetero) aromatic nitro or cyclic azine type, dyeing process, and mixed dyes has been assigned to L’Oréal Paris, France.
A composition comprising at least one mixed dye comprising at least two chromophores of (hetero) aromatic nitro or cyclic azine type, dyeing process, and mixed dyes has been assigned to L’Oréal Paris, France.