Patent ID: 8920521

Claim:
An agent for altering the color of keratin fibers comprising: (A) a color base composition, containing, in a cosmetically acceptable medium: (a) from about 50% to about 80% by weight of a fatty substance comprising: (i) at least 5% by weight of at least one fatty substance having a viscosity greater than about 50 mm 2 /s at 40° C.; and (ii) from 0% to about 75% by weight of at least one additional fatty substance other than (A)(a)(i); all weights being based on the total weight of (A); (b) at least one rheology modifying polymer selected from a crosslinked acrylate polymer in aqueous dispersion; (c) at least one alkalizing agent; (d) at least one short alkyl chain hydroxy compound chosen from monoalcohols and polyols; (e) at least one oxidative dye precursor; and (B) an oxidizing composition comprising, in a cosmetically acceptable medium, at least one oxidizing agent; and wherein the pH of the agent for altering the color of keratin fibers ranges from about 1 to about 7.