(Photo: Flickr/Dan4th Nicholas)
Q: How bad for you or your skin is writing on your hand or arm with a Sharpie pen? My nieces and other girls do it frequently to list their races before swim meets and later wash off the ink with sunscreen. Should I be worried?
A: The absorption of any toxic substances from the Sharpie is zero.
The ink dyes the skin cells, which are dead, and they are rubbed off with the sunscreen. So I would not be worried.
Cool idea regarding the swim meets!
-- Answer from Dr. Cameron, a physician on JustAnswer.
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