Skin PigmentationPigmentation DisordersPigmentationMelaninsMelanosomesPropionibacterium acnesMelanocytesHyperpigmentationSkinSunlightMonophenol MonooxygenaseReceptor, Melanocortin, Type 1Eye ColorUltraviolet RaysSkin Physiological PhenomenaCyclic AMP-Dependent Protein Kinase RIalpha SubunitHypopigmentationErythemaChromatophoresAlbinismalpha-MSHMelanophoresVitamin D DeficiencyClofazimineMultiple Endocrine NeoplasiaHair ColorDyskeratosis CongenitaVitiligoAdrenal Cortex DiseasesMyxomaVitamin DSkin AgingSkin DiseasesKeratinocytesSkin NeoplasmsAntiportersEpidermisPigments, BiologicalAgouti Signaling ProteinSyndromeMelanosisAfrican Continental Ancestry GroupDermatologic AgentsEuropean Continental Ancestry GroupAcne KeloidSebumBenzoyl PeroxideSelection, GeneticAlbinism, OculocutaneousPolymorphism, Single Nucleotide