The Nioxin System 4 Starter Trial Kit is specially designed for those with noticeably thinning, fine, chemically-treated hair, delivering denser-looking hair while protecting the scalp and providing moisture balance to colored hair. This 3-part system includes a cleanser, scalp therapy, and scalp treatment that work together to remove follicle-clogging sebum, fatty acids, and environmental residues from the scalp skin and hair, providing thicker-looking hair and a refreshed scalp environment. The lightweight conditioner helps provide hair resilience and control moisture balance. What are the benefits and features of Nioxin System 4 Starter Trial Kit? Delivers denser-looking hair and restores moisture balance. Specially designed for noticeably thinning, fine, chemically-treated hair. Cleanser helps remove follicle-clogging sebum, fatty acids, and environmental residues from the scalp skin and hair. Scalp therapy provides a lightweight conditioner that helps provide hair resilience and control moisture balance. Scalp treatment contains antioxidants and botanicals that help to provide a refreshed scalp environment. Easy to use 3-part system. Perfect for those with chemically-treated hair. Who is Nioxin System 4 Starter Trial Kit for? This starter trial kit is perfect for those with noticeably thinning, fine, chemically-treated hair who want to achieve denser-looking hair and a refreshed scalp environment while restoring moisture balance.