Add Yahoo as a preferred source to see more of our stories on Google. Understanding the UV index can help you protect yourself from further, painful burns — and long-term skin damage. "The UV index ...

Sunburn has traditionally been attributed to UV-induced DNA damage. However, a new study reveals that RNA, another vital cellular molecule, plays a major role in triggering acute sunburn reactions.

Avoid this common myth and your skin will look healthier longer.

No matter what you complexion, ultraviolet radiation (UV) from the sun or tanning beds will damage your skin.