Patent ID: 11896709
Assignee: GODREJ CONSUMER PRODUCTS LTD.
Field: Pharmaceuticals (Chemistry)
Classification: CPC A | IPC A

Claim 16:
17. A method for applying a two-part natural hair colour composition to hair, wherein the two-part natural hair colour composition comprises:
a first part comprising an aqueous or alcoholic solution of dye and at least one compound selected from the group consisting of basic salts, organic bases, and organic swelling agents;
wherein the dye comprises a logwood extract, alone or in combination with at least one of a henna extract, an indigo extract, and a madder extract; and

a second part comprising an aqueous or alcoholic solution of a metal salt based mordanting agent;, wherein the method comprises:
a) applying the first part of the two-part natural hair colour composition to the hair;
b) applying the second part of the two-part natural hair colour composition to the hair 30 minutes to 120 minutes after application of the first part of the two-part natural hair colour composition; and
c) allowing the mordanting agent in the second part of the two-part natural hair colour composition to form a color-modifying complex with the dye in the first part of the two-part natural hair colour composition.