Bleaching method for keratinic fibres

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Procedure for blonding keratin fibers, preferably human hair, comprises mixing a preparation A containing at least an oxidizing agent including hydrogen peroxide and its addition compound in solid carriers, optionally with a preparation B containing at least a bleaching activator, optionally with a preparation C; applying the mixture on the keratin fiber and subsequently washing the fiber after an influential time, where the preparation contains at least a water-soluble protein hydrolyzate or its water-soluble alkali- and/or optionally substituted ammonium- and/or alkaline earth salt.