Patent ID: 7758659

Claim:
A single component air oxidation hair color composition comprising: a) water; b) a catalyst of water soluble metal salt selected from the group consisting of manganese sulfate and manganese chloride and wherein the metal salt content is 0.1 to 1.0%; c) etidronic acid (1-hydroxyethane-1,1-diphosphonic acid) as a chelating agent and color deposition enhancer; d) oxidation primary dye intermediates; e) a compound 1,2,4-Benzenetriol; f) auxiliary oxidation dye couplers; g) dye antioxidants and stabilizers; h) optionally, a water soluble surfactant; i) optionally, a water soluble anionic polymer; j) a water soluble solvent system selected from the group consisting of isopropanol and isopropyl acetate, or ethanol and ethyl acetate, wherein the total solvent system content is 0.5 to 10% of the total composition; and k) an alkalizer.