'This pigment can absorb only so much ultraviolet light before your skin starts to burn'
melanin
THE BODY HUMAN: This pigment can absorb only so much ultraviolet light before your skin starts to burn
This pigment can absorb only so much ultraviolet light before your skin starts to burn
This pigment can absorb only so much ultraviolet light before your skin starts to burn
THE BODY HUMAN
melanin
THE BODY HUMAN