US Patent No. 9,901,529 B2;  Alfa Parf Group S.P.A., Bologna, Italy, has been awarded a US patent covering ready-to-use gel compositions for coloring hair in the form of an aqueous solution comprising: at least one acrylates/methacrylamide copolymer; at least one cellulose derivative; at least one cross-linked polymer of acrylic acid or methacrylic acid or salts thereof; at least one oxidation dye and optionally at least one direct dye; at least one alkalizing agent; and hydrogen peroxide or a h...