Patent ID: 8025703

Claim:
A two-part foam hair dye comprising a first agent comprising an alkali agent, a second agent comprising hydrogen peroxide, and a non-aerosol foamer container for discharging a mixture of the first agent and the second agent in foams, wherein the first agent comprises components (A), (B), and (C1) and optionally component (C2); a total concentration of components (C1) and (C2) in the first agent is from 0.16 to 0.50 mol/kg; the mixture has a viscosity at 25° C. of from 1 to 300 mPa·s: (A) a water-soluble cationic polymer; (B) from 0.20 to 2.00 mol/kg of an alkali metal ion; (C1) 0.05 mol/kg or greater of an oxidation dye having a phenolic hydroxyl group; and (C2) an anionic surfactant.