摘要：

A hair-bleaching composition, preferably in a water-free base, in particular in powder form, which is mixed with an aqueous hydrogen peroxide solution before application to the hair, contains about 10 to about 60% by weight of at least one ammonium salt, is peroxide-free and is composed such that on mixing with hydrogen peroxide solution a pH of the ready-to-use mixture of between about 7.7 and about 9.0 is obtained. The replacement of the persulphate by ammonium salts eliminates the allergenic potential of the composition without the bleaching properties being impaired.

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