It is known that melasma occurs in all ethnic and population groups. However, epidemiological studies have reported higher prevalence among more pigmented phenotypes, such as East Asians (Japanese, Korean and Chinese), Indian, Pakistani, Middle Eastern and Mediterranean-African. In the Americas, it is common among Hispanic-Americans and Brazilians who live in intertropical areas, where there is greater exposure to ultraviolet radiation (UVR).13-15