Środek do łagodzenia problemów skórnych zawierający pochodną morfinanu lub jego farmakologicznie dopuszczalną kwasową sól addycyjną jako substancję czynną
The object of this invention is to provide a novel medicine useful for therapy to improve the skin properties such as skin drying, skin roughening and the skin darkening involved in hyperkeratosis (thickened keratin layer) via a skin moisture retaining effect against the decline of the skin functions brought about by various causes. This invention provides a skin property-improving therapeutic agent comprising a compound having a specific morphinan skeleton typified by a compound 1 represented by the following formula (II) or any of its pharmacologically permissible acid addition salts as an active ingredient.