Nioxin Intensive Therapy Follicle Booster is an intensive specialized leave-in scalp treatment for anyone experiencing a low-density hairline and areas of excessively thin-looking hair. Follicle Booster utilizes a unique and proprietary NIOXIN technology - Scalp Respiratory Complex (SRC) to improve scalp cell activity and greater protection from damaging free radicals. Its unique Liposomal delivery system, NIPOSOMES™ targets hair follicle sites for maximum vitamin nourishment and protection from pseudo-estrogens (environmental pollutants). Follicle Booster helps to repair and protect skin from damage caused by free radicals, which helps to create the optimum scalp environment.