Skin PigmentationPigmentation DisordersPigmentationMelaninsSkinMelanosomesMelanocytesHyperpigmentationSunlightMonophenol MonooxygenaseReceptor, Melanocortin, Type 1Skin Physiological PhenomenaEye ColorUltraviolet RaysCyclic AMP-Dependent Protein Kinase RIalpha SubunitErythemaSkin AgingHypopigmentationSkin NeoplasmsSkin DiseasesChromatophoresAlbinismalpha-MSHMelanophoresVitamin D DeficiencyClofazimineHair ColorMultiple Endocrine NeoplasiaDyskeratosis CongenitaVitiligoAdrenal Cortex DiseasesEpidermisMyxomaVitamin DAntiportersKeratinocytesSkin TestsSkin AbsorptionPigments, BiologicalAgouti Signaling ProteinSyndromeMelanosisSkin, ArtificialAfrican Continental Ancestry GroupEuropean Continental Ancestry GroupSelection, GeneticAlbinism, OculocutaneousMutationPolymorphism, Single Nucleotide