Melanin helps protect the cells of the epidermis, or outer layer of the skin, from UV light. This protection extends to all forms of UV light (UVC, UVB, and UVA) as well as blue light. It does this by absorbing the UV light before it’s able to damage the sensitive DNA of the skin cells.
Melanin also demonstrates antioxidant activity by scavenging for reactive oxygen species produced via UV light damage. Without intervention from protective compounds like antioxidants, these reactive oxygen species (ROS) scavenger contribute to oxidative stress, which causes significant cellular damage.