The beloved sun causes skin cancer. Here are the facts about what that means.
Biologists report that melanocyte skin cells detect ultraviolet light using a photosensitive receptor previously thought to exist only in the eye. This eye-like ability of skin to sense light triggers the production of melanin within hours, more quickly than previously thought, in an apparent rush to protect against damage to DNA.
Pharmacists name Neutrogena the No. 1 sunscreen, but that doesn’t mean it provides better sun protection than the rest.