TretinoinSimvastatinKeratolytic AgentsLentigoAcne VulgarisOintmentsAdministration, TopicalSkin AgingCosmeticsChemexfoliationDermatologic AgentsHyperpigmentationAcitretinMelanosisNicotinic AcidsEmollientsTrichloroacetic AcidKeratosis, ActinicSkin CareFacial InjuriesHydroxymethylglutaryl-CoA Reductase InhibitorsCarcinoma, Basal CellRetinoidsAdministration, CutaneousSkinSkin PigmentationAnticholesteremic AgentsDrug CombinationsDouble-Blind MethodLovastatinAzetidinesAntineoplastic AgentsHypolipidemic AgentsTreatment OutcomeHeptanoic AcidsHypercholesterolemiaPravastatinMevalonic AcidPyrrolesFluorobenzenesCholesterol, LDLCholesterolPolyisoprenyl PhosphatesLipidsNiacinRhabdomyolysisDrug Therapy, Combination