20 Worst Pieces of Health Advice on the Internet

'There's some pretty scary skin-care advice out there,' says New York City dermatologist Bobby Buka, MD, founder and chief science officer of the First Aid Beauty. One of the worst ideas he's ever seen: Tying dental floss around a mole or skin tag to reduce blood flow and make it fall off. Any mishaps could lead to dangerous infection or even kill skin tissue—both way more serious than any concerns about your appearance. A quick in-office removal is always a smart bet. 'You get the benefit of a sterile environment, a practiced hand, and some lidocaine to numb the pain,' says Dr. Buka. Learn more myths about skin tags you need to stop believing.