Healthy Hair and Scalp Follicle Energizer, with biotin and caffeine, is an intensive, advanced leave-in treatment serum that helps support healthy hair function in areas of thinning. Botanical extracts help protect and strengthen for thicker, fuller-looking hair. Contains stimulating activators that assist in increasing cellular energy and microcirculation on the scalp, creating the foundation for healthy hair growth. Biotin and panthenol help strengthen the hair while DHT-inhibiting caffeine helps reduce scalp inflammation and increase circulation.