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 ...

Freckles are often caused by variations in a particular gene that affects melanin. They are common and usually harmless. If you have concerns about any marks on your skin, consult a dermatologist for ...

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 ...