RENEW treats damaged and over-processed hair by naturally closing the cuticle with a powerful amino acid complex. RENEW promotes the appearance of thicker, fuller and longer hair. Actiiv Renew Healing Shampoo Treatment helps restore and repair dry, damaged, brittle hair. This healing shampoo treatment uses natural ingredients to strengthen and promote healthier hair that is less vulnerable to split ends and breakage. It also uses alpine willowherb to help keep hair healthy, thicker, fuller, and longer.