Abstract: A treatment method effective for promoting hair growth utilizes atrial natriuretic peptide.

Abstract: A preparation and a treatment method effective for improving a state of a bald head, promoting hair growth, and restoring injured skin tissues, supporting tissues, and cardiac muscle contains atrial natriuretic hormone family molecules.

Abstract: [Summary] [Object] To develop a preparation and a treatment method effective for improving a state of a bald hear, promoting hair growth, and restoring injuredskin tissues, supporting tissues, and cardiac muscle. [Solution] A preparation containing atrial diuretic hormone family molecules are used for restoration and regeneration of a tissue and an organ. The preparation is used for growing hairs and/or for improving and restoring failures of skin, mucosa, and subcutaneous tissue such as bed bore, rough and dry skin, burn injuries, necrosis, and psoriasis, and also for improving cardiac muscle failures.