Composition comprises at least a naphthoic acid derivative, benzoyl peroxide and at least one film-forming agent, in a medium. An independent claim is included for the preparation of a composition comprising (a) preparing an active phase 1 comprising two agents, (b) preparing active phase 2 comprising other agent, (c) preparing the aqueous phase, (d) optionally preparing a film-forming phase, mixing two active phases, optionally preparing a fatty phase, (e) optionally emulsifying the mixture of aqueous and fatty phases, (f) mixing the aqueous and fatty phases or aqueous phase with the unique active phase, (g) optionally adding polyacrylamide, optionally neutralizing the unique active phase, (h) optionally adding of the film-forming phase and (i) optionally adjusting in water. ACTIVITY : Dermatological； Antiseborrheic； Vulnerary； Nootropic. MECHANISM OF ACTION : None given.
