Nioxin System 3 Cleanser Shampoo for colored hair with light thinning is the first step in a three-part Nioxin routine, specially formulated to strengthen hair and hair texture. This professional shampoo cleans the skin and removes dirt, excess oil and other environmental residues from the scalp and hair. This clinically and dermatologically tested shampoo contains white tea extract and moisturizes the scalp and hair from root to tip while making the hair structure thicker and stronger. Finish with Nioxin System 3 Conditioner and Nioxin System 3 Treatment for best results. Available in 2 sizes: 300 ml and 1000 ml.