Agents are described for lightening keratinic fibers, which contain two separately packaged preparations (A) and (B), wherein preparation (A) contains at least one persulphate, and at least two chelating agents and preparation (B) contains at least one oxidizing agent. In a preferred embodiment the two chelating agents are ethylene diamine tetraacetic acid (EDTA) and 1-hydroxyethane-(1,1-diphosphonic acid) (HEDP), the persulfate is chosen from ammonium persulfate, potassium persulfate and sodium persulfate and the oxidizing agent in part B is hydrogen peroxide. Methods for lightening keratinitic fibres using the agents described are also disclosed.
