Removing skin tags is a bad idea because there's a chance the process isn't actually harmless. "Not all things that seem to project off our skin surface are benign tags, and it is important to know the exact diagnosis of the lesion removed," Ciraldo says.

"If you have a difficult time getting into a derm for a visit, consult your primary physician about diagnosis and treatment of things that you think are simply skin tags."

"Putting a henna tattoo on your face and then watching it fade unevenly as the days go on is a mistake," Ciraldo says. But since freckles are a result of overexposure to the sun, you shouldn't feel like you have to forgo the sunscreen to get them. "Just take a thin waterproof [light brown] eyeliner and paint on these spots."