Permanent Makeup Isn't Always Pretty

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If you do decide on a cosmetic tattoo, Marmur suggests asking for a list of ingredients in the inks so you can check with your dermatologist to see if there's anything likely to cause a reaction. Also, your dermatologist can let you know if that particular ink can be removed at a later date. Some red inks, which could be used in a lipstick tattoo, turn black and become permanent if they're exposed to the lasers commonly used to remove tattoos, she said.

What's most important, Marmur said, is to make sure you know the worst-case scenarios. "You should know the common and rare side effects before doing anything, and you should know if it's something that can be reversed if you're not happy with the results. Also, ask if there's any way to allergy test in advance."

More information

The U.S Food and Drug Administration has more information on permanent makeup and tattoos.