Patent ID: 8403999

Claim:
A device or kit for dyeing keratin fibers comprising one or more compartments, wherein: (1) a first compartment contains a dye composition free of oxidizing agents, comprising, in a suitable dyeing medium: at least one hair dye; and at least one polycondensate of ethylene oxide and propylene oxide consisting of polyethylene glycol and polypropylene glycol blocks having the following chemical structure: 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 wherein the dye composition is not the following: INCI name g % Beheneth-10 6.00 Sorbitol 5.00 Liquid petroleum jelly 60.25 Water 10.00 Ethanol 2.00 Poloxamer 184 5.00 Potassium bicarbonate 1.75 Water 4.302 Monoethanolamine 5.00 p-Phenylenediamine 0.216 2,4-Diaminophenoxyethanol dihydrochloride 0.482 and (2) an optional second compartment contains an oxidizing composition.