Patent ID: 8882854

Claim:
An agent for coloring and/or lightening keratinic fibers comprising, in a cosmetic carrier, (a) one or more oxidation dye precursors, (b) ammonia in a quantity of from about 0.25 to about 1.75 wt %, based on the total weight of the agent, (c) one or more ethoxylated fatty alcohols having a degree of ethoxylation from 80 to 120, and (d) one or more zwitterionic polymers contain at least one anionic structural unit of formula (II) and at least one cationic structural unit of formula (III): wherein R2 and R3 mutually independently denote a hydrogen atom or a methyl group, m denotes an integer from 2 to 6, and R4, R5 and R6 mutually independently denote a C 1 to C 6 alkyl group, wherein the agent contains no carbonates.