Scratching the surface: can tiny wounds spark new hair growth?

This early study tested if gentle wounding (using a laser or mild scraping) can trigger new hair growth in people with a type of scarring hair loss called CCCA. Researchers mapped bald spots on the scalp, applied different wounding methods with or without FDA-approved creams, and watched for new hairs using photos and small skin samples. The goal was to see if this approach could lead to new treatments for conditions where hair follicles are permanently lost.