Aqueous preparations for local application containing equimolar amounts clindamycin phosphate and zinc salt soluble in water for use in the treatment of dermatitis e.g. acne vulgaris and a method for preparation of the said dermatological preparations.Aqueous preparations for local application containing equimolar amounts clindamycin phosphate and zinc salt soluble in water for use in the treatment of dermatitis e.g. acne vulgaris and a method for preparation of the said dermatological preparations.