| abstract |
Cosmetic agent for treating keratinic fibers, in particular human hair, containing: (a) one or more metal salts from the group of tin(II) salts, iron(II) salts, manganese(II) salts, titanium(II) salts, and titanium(III) salts; and (b) water, wherein the agent has a pH between 1.0 and 3.0. Preferably, the salt is a tin (II) or iron (II) salt; most preferably tin (II) salt e.g. chloride, bromide, fluoride (halide), acetate, gluconate, lactate, tartrate, and oxalate. Most preferably, the salt is present from 3.0 to 10.0 wt.%, and the water from 70 to 93 wt.%. Most preferably, the pH of the composition is between 1.0 and 2.5. Preferably, an inorganic acid (sulphuric, phosphoric, hydrochloric, hydrobromic) is included in the composition. Preferably, an organic acid is present in the composition. A further subject matter of the invention is a method for the reductive decolorization of dyed keratin fibers, using the above-described agent as an after-treatment agent. |