Patent ID: 8142518

Claim:
An agent for dyeing and/or bleaching keratin fibers, consisting of: a first composition (A) comprising at least one basifying agent, and a second composition (B) comprising at least one oxidizing agent, wherein, at least one of the two compositions (A) and (B) comprises at least one fatty substance not containing any carboxylic acid functional groups, the total amount of the at least one fatty substance in the mixture of compositions (A) and (B) representing at least 20% by weight relative to the total weight of the mixture, and at least one of the compositions (A) and (B) comprises at least one sequestrant chosen from those of formula (I) and acids thereof: wherein p is an integer equal to 0 or 1, n and m are integers, independently of each other, equal to 0, 1 or 2; the sum n+m being equal to at least 1, R 1 , R 2 , R 3 and R 4 represent, independently of each other, a hydrogen atom, —CH 2 CO 2 M1 or —CH(CO 2 M2)(CH 2 CO 2 M3), Y represents NCH 2 CO 2 M4, M1, M2, M3, and M4 denote, independently of each other, a hydrogen atom, cations derived from an alkali metal or an alkaline-earth metal, cations derived from an optionally hydroxylated organic amine, or an ammonium cation, with the understanding that if p is 0, then R 1 and R 3 both represent a hydrogen atom, and R 2 and R 4 both represent, independently of each other, —CH(CO 2 M2)(CH 2 CO 2 M3), and if p is 1, then n and m are each at least 1.