Many of the ‘beauty trends’ circulating on Tik Tok don’t work and can affect your skin, says Dr. Leslie Baumann, a Miami dermatologist Joyce Marshall MCT file photo Be careful of the new ...

TikTok is fuel for many trends, including a skincare craze among teens, pre-teens — okay, and us. The "glass skin" trend calls for a multi-step routine, often involving pricey products.