Here’s what dermatologists say about this trendy ingredient. By Melinda Wenner Moyer If you’ve spent time exploring the skin care side of TikTok, you know that dermatologists love to tout the benefits ...

Casey Gallagher, MD, is a dermatologist and clinical professor in the Department of Dermatology at the University of Colorado Denver. Acne is a common skin condition that affects about 50 million ...