Patent ID: 8628587

Claim:
A hair dye composition comprising: at least one oxidation dye precursor; at least one polycondensate of ethylene oxide and propylene oxide of the formula: H—(O—CH 2 —CH 2 ) a —(O—CH(CH 3 )—CH 2 ) b —(O—CH 2 —CH 2 ) a′ —OH, wherein a and a′ range from 2 to 150, and b ranges from 1 to 100; and at least one polyoxyalkylenated fatty acid anionic surfactant; wherein the weight ratio of the at least one polycondensate of ethylene oxide and propylene oxide to the at least one polyoxyalkylenated fatty acid anionic surfactant ranges from about 0.05 to about 1.