Finally, the option to focus your attention where you need it. Ideal for spots like the hair or the crown, Nioxin Hair Booster is an intensive leave-on serum for areas of concern. This multi-tasking product protects each individual strand, stimulates the scalp and hair growth, and gives a warming sensation. Nioxin Hair Booster is infused with CoZyme-10 Vitamin Complex, which is scientifically derived from anti-ageing technology. It is designed for areas where hair density is low or thinning. Keratin boosts fragile hair, and cuticle damage is prevented. The hair is protected and boosted. Methyl Nictinate gives a warming sensation, and promotes blood flow to affected areas to stimulate growth.