The invention relates to a composition comprising N,N-dicarboxymethyl
glutamic acid,
babassu oil, at least one
alkali metal, and at least one oxidizing dye. The invention also relates to a composition comprising at least one compound selected from N,N-dicarboxymethyl
glutamic acid, one of its salts, solvates and / or solvates of its salts,
babassu oil, at least one
alkali metal, and at least one oxidizing dye.