Natural vegetable source based hair colour

A two-part natural colour composition containing two parts, wherein:

• a) a first part contains a natural dye comprising a logwood extract, alone or in combination with at least one of a henna extract, an indigo extract, and a madder extract;
• and at least one compound selected from the group consisting of basic salts, organic bases, and organic swelling agents;
• and
• b) a second part contains a metal salt based mordanting agent;
• wherein:
• the first part is configured to be applied to hair;
• and
• the second part is configured to be applied after the first part so as to modify a hair color produced by the natural dye.

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.