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Home › Composition comprising at least one 2-pyrrolidone functionalized with an ester or amide radical, and at least one pigment or direct dye, for dyeing keratin materials

Composition comprising at least one 2-pyrrolidone functionalized with an ester or amide radical, and at least one pigment or direct dye, for dyeing keratin materials

US Patent 8771376 · Granted Jul 8, 2014

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