System 4 Hair Thickening Kit for Progressed Thinning & Color-Treated

Revitalize your hair with the Nioxin System 4 Kit, a professional-grade, 3-step regimen specifically engineered to address progressed thinning. Designed for those with noticeably thinning, color-treated, or chemically processed hair, this system focuses on restoring scalp health and hair density.

The kit features a clarifying shampoo to cleanse the scalp, a nourishing conditioner to provide moisture balance, and a powerful leave-on Scalp & Hair Thickening Treatment. This advanced formula is infused with UV protection to shield your hair from environmental damage, helping to maintain your color vibrancy while preventing breakage. By removing follicle-clogging sebum and fatty acids, System 4 creates an optimal environment for thicker, fuller-looking hair. Experience the transformative power of a salon-quality thickening treatment designed to build hair resilience from root to tip.