Tretinoin for photodamaged skin.
D002986:Clinical Trials as Topic; D006801:Humans; D007509:Irritants / Q000009:adverse effects; D015595:Skin Aging / Q000187:drug effects*; D014212:Tretinoin / Q000009:adverse effects / Q000627:therapeutic use*
D007509:Irritants; D014212:Tretinoin