title: Topically applied tretinoin for senile (solar) comedones.
mesh_terms: D000152:Acne Vulgaris / Q000188:drug therapy* / Q000209:etiology / Q000473:pathology; D000367:Age Factors; D000368:Aged; D006801:Humans; D008297:Male; D008875:Middle Aged; D013472:Sunlight; D014801:Vitamin A / Q000008:administration & dosage / Q000627:therapeutic use*
chemical_list: D014801:Vitamin A