What is it: System Kit 4 is designed for dry, damaged, colour-treated hair with progressed thinning. Clinically and dermatologically tested. Why you'll love it: The System 4 Conditioner is a lightweight conditioner that helps provide hair resilience, hydrates scalp and hair from root to tip. Featured ingredients: Formulated with a powerful blend of wild mint oil and peppermint oil. Its lightweight, moisturising formula contains ingredients that strengthen the hair against damage and breakage, while promoting a healthier scalp. Key benefits: THICKENS THE HAIR: clinically designed to add thickness and fullness to natural hair with progressed thinning, with visible results in just 30 days SUPPORTS SCALP HEALTH: gently cleanses the scalp, removing impurities and excess sebum that can clog hair follicles, creating a healthier environment for the scalp REDUCES HAIR THINNING: helps minimize hair breakage, promoting the appearance of fuller, thicker hair NOURISHES THE SCALP: infused with antioxidants and UV protecting ingredients, the kit includes a Leave-On Treatment which can nourish and revitalize the scalp How to use: After using Nioxin System 4 Shampoo, gently massage Nioxin System 4 Conditioner into the scalp and hair, focusing on the ends. Leave on for 1-3 minutes for optimal results. Rinse thoroughly.