Nioxin Scalp + Hair Thickening System 3 Treatment Serum for Coloured hair with Light Thinning is clinically and dermatologically tested, the hair thickening treatment nourishes and strengthens each strand of hair from root to tip, resulting in thicker, fuller hair.Key benefits:- Clinically designed to add thickness and fullness to dry, damaged, colour-treated hair with light thinning, with visible results in just 30 days.- Advanced formula gently cleanses the scalp, removing impurities and excess sebum that can clog hair follicles, creating a healthier environment for the scalp.- Helps minimize hair breakage, promoting the appearance of fuller, thicker hair while protecting the colour.- Infused with nourishing ingredients and antioxidants, the scalp + hair thickening treatment can nourish and revitalize the scalp, improving its overall health and condition.To use:Apply Nioxin System 1 Scalp + Hair Thickening Treatment to towel-dried hair, focusing on the scalp and areas of concern. Massage gently to ensure even distribution. Do not rinse out, style as desired. For optimal results, use alongside Nioxin System 1 Scalp + Hair Shampoo and Conditioner.