How Does Skin Tan and Burn?

BrainStuff

When our skin deepens in color after sun exposure, it's trying to protect us from damage. Learn how it works -- plus why you should help it out with sunscreen, and why some people burn instead -- in this episode of BrainStuff, based on this article: https://health.howstuffworks.com/skin-care/beauty/sun-care/sunscreen.htm

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