According to PubMed, derma rollers help promote hair growth as it stimulates hair and is useful to treat hair loss. It is advisable to consult a dermatologist before using a derma roller.

Microneedling with a derma roller is just one of the many hair care regimens trending on TikTok, but does it actually help stimulate hair growth? According to Dr. Candace Spann, a board-certified ...