Freckles are composed of an ingredient called melanin, which protects against damage caused by UV light. Your body makes melanin to protect itself from sun damage. When people who have darker skin ...
You’ve probably noticed a new spot on your skin at some point — maybe a small brown dot on your shoulder or a darker patch on your hand. But how do you know if it’s a harmless freckle or something ...
Q Why do we have freckles? Blue Sky Science is a collaboration of the Wisconsin State Journal and the Morgridge Institute for Research.
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