Treat fine, noticeably thinning, chemically treated hair to a rejuvenating solution that enhances volume, controls moisture balance & refreshes the scalp. NIOXIN's System 4 Scalp & Hair Treatment with Sunscreen is a unique blend of cuticle strengthening Bio Amp™, scalp rejuvenating Glyco-Shield™ with white tea extract & peppermint oil & Scalp Access™ Delivery System; a technology designed to rid follicles of debris & provide SPF 15 for the scalp. Proven to deliver noticeably thicker hair & a healthy scalp with its array of botanicals & antioxidants, the treatment is the last stage in a three part regime to achieving denser-looking hair with reduced breakage & a sun protected scalp.