title: Questions & answers. Of all the treatments that promise to improve the appearance of aging skin, which ones have been medically proven to actually work?
authors.forename: Robert S
authors.initials: RS
authors.lastname: Stern
mesh_terms: D017679:Cryotherapy; D003879:Dermatologic Agents / Q000627:therapeutic use; D006801:Humans; D007641:Keratolytic Agents / Q000627:therapeutic use*; D053685:Laser Therapy; D009539:Nicotinic Acids / Q000627:therapeutic use*; D015595:Skin Aging / Q000187:drug effects*; D014212:Tretinoin / Q000008:administration & dosage*; D012176:Retinoids
chemical_list: D003879:Dermatologic Agents; D007641:Keratolytic Agents; D009539:Nicotinic Acids; D014212:Tretinoin; C086827:tazarotene; D012176:Retinoids