If you have excessively thinning areas or a low-density hairline, Follicle Booster is an intensive, vitamin-enriched leave-in scalp treatment that exfoliates dead skin cells & transports advanced nourishment to hair. How to use: Use twice daily. Apply Follicle Booster directly onto scalp. Distribute with fingertips to areas of excessively thin-looking hair & along the hairline. Vitamin enriched formula gives temporary redness to skin after application.