KERATIN FIBRE COLOURING COMPOSITION CONTAINING SUBSTANTIVE DYE HAVING DISULPHIDE/THIOL FUNCTION, NON-CELLULOSE THICKENING POLYMER, AN ALKALINE AGENT AND REDUCING AGENT Russian patent published in 2020 - IPC A61K8/49 A61K8/86 A61K8/87 A61Q5/10

Abstract RU 2711450 C2

FIELD: cosmetic industry.

SUBSTANCE: group of inventions relates to cosmetics, specifically to hair colouring. First invention is a keratin fibre colouring composition containing at least one substantial colorant containing a disulphide bond; non-ionic polyurethane polyether; at least one alkaline agent; at least one reducing agent; and optionally at least one surfactant. Group of inventions also relates to a method of dyeing keratin fibres and a method of clarifying colouring of dark keratin fibres, as well as a multisectional staining device.

EFFECT: group of inventions provides prolonged staining of keratin fibres, which is strong, chromatic and/or homogeneous.

23 cl, 6 tbl

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RU 2 711 450 C2

Authors

Geren Frederik

Purij Kristel

Dates

2020-01-17—Published

2012-02-17—Filed