Care for weakened colour-treated hair with the NIOXIN System 4 Anti-Hair Loss Trial Bundle. Featuring a shampoo, conditioner and leave-in treatment, the three-step routine is designed to strengthen fragile strands while helping to maintain colour vibrancy and support a healthy-feeling scalp. Powered by niacinamide and biotin to nourish the hair roots and support stronger-looking hair, the formulas are enriched with conditioning botanicals to improve resilience, reduce the appearance of breakage and enhance body. Together, they leave hair feeling refreshed, healthier and more manageable, with a fuller-looking finish and protected colour. Set Contents: System Kit 4 Shampoo System Kit 4 Conditioner System Kit 4 Treatment Nioxin Head Towel