The Best Korean Scalp Serums Experts Love for a Healthier Scalp and Stronger Hair

Dr. Groot’s growth-boosting serum is a favorite of both Yoo and LoGerfo. “It’s one of the first products I’ve come across with a roll-on design featuring a unique metal tip that allows for precise, targeted application,” says Yoo. The formula itself is lightweight, non-sticky, and easy to use. “It helps calm scalp redness, boost hydration, and reduce hair loss caused by breakage. It’s the perfect tool for giving extra care to the areas of your scalp that need it most,” Yoo concludes.

Key ingredients: Biotin, rosemary leaf extract, salicylic acid, panthenol, niacinamide, caffeine

Editor review: “After a month of K-tip extensions, my hair was thinner, weaker, and more broken than ever. I turned to Dr. Groot’s hair-thickening lineup, including this serum, in hopes of undoing some of the damage. Every night, I rolled the applicator along my part and hairline, and after a few months, the results spoke for themselves. My hair looked healthier, my part appeared fuller, and my baby hairs grew back faster than I expected. I still credit this serum for helping my hair bounce back so fast.”—Emma Aerin Becker, associate beauty commerce writer