Abstract: Described is a product containing at least one lysophospholipid and at least one fatty acid, as a combined preparation for simultaneous, separate or sequential use, to be topically applied, in order to temporarily and reversibly inhibit a neuromuscular junction or the release of acetylcholine from autonomic nerve endings; this product can be used for treating hyperhidrosis conditions and for the cosmetic treatment of facial and other body wrinkles and, in general, human syndromes caused by the hyperactivity of peripheral nerve terminals.