Colouring composition
AssigneeUnilever Home & Personal Care USA, Division of Conopco, Inc.
InventorsMark Edward Baker, Timothy John Madden
Life of this patent
Estimating the term…
Abstract
A rinse off colouring composition comprises: (i) a clay having a net positive or negative charge at its surface; and (ii) an agent capable of imparting a colour to hair. The agent has a net charge which is opposite from the charge on the surface of the clay. The compositions have good colour delivery to hair and reduced colouration of skin relative to colouration of hair.
Claims24
Rinse off hair colouring composition comprising:
- (i) a clay having a net positive or negative charge at its surface;
- (ii) an agent capable of imparting a colour to hair;
- and
- (iii) a perfume and/or a surfactant,
- wherein the agent has a net charge which is opposite from the charge on the surface of the clay.
Composition as claimed in any one of the preceding claims, which contains at least sufficient clay to balance the charge on the agent.
Composition as claimed in any one of the preceding claims, wherein the weight ratio of clay to agent is in the range of from 1:10 to 1:0.5.
Composition as claimed in any one of the preceding claims, wherein the agent is a molecular cation or a molecular anion.
Composition as claimed in any one of the preceding claims, wherein the clay is an anionic clay and the agent is a cationic dye.
Composition as claimed in any one of the preceding claims which is a hair colourant composition.
Composition as claimed in any one of the preceding claims which is a hair conditioning composition comprising a hair conditioning agent.
Use of a clay to reduce the amount that an agent capable of imparting a colour to hair colours skin relative to the amount that the agent colours hair, wherein the clay has a net charge at its surface and the agent has a net charge which is opposite from that of the clay.
Dependencies are inferred from the claim text.