Nioxin System 1 Scalp Therapy Revitalizing Conditioner for natural hair with slight thinning is the second step in a three-part Nioxin routine, specially formulated to strengthen hair and prevent breakage. This lightweight professional conditioner helps detangle, preserve moisture balance, strengthen hair structure and increase hair resilience, for hair that looks healthier and fuller. This clinically proven and dermatologically tested conditioner reduces hair loss due to breakage by up to 91%* and is suitable for normal to slightly thinning hair. Use together with Nioxin System 1 Cleanser Shampoo and Nioxin System 1 Treatment for best results. Available in 2 sizes: 300 ml and 1000 ml. *compared to shampoo without conditioner effect