WHAT IT IS Defend against hair loss and create volume with the Bosley BosDefense Starter Pack for Color-Treated Hair. Includes BosDefense Nourishing Shampoo for Color-Treated Hair - 5.1 oz BosDefense Volumizing Conditioner for Color-Treated Hair - 5.1 oz BosDefense Thickening Treatment for Color-Treated Hair - 3.4 oz WHAT IT DOES BosDefense Nourishing Shampoo for Color-Treated Hair Bosley Pro BosDefense Nourishing Shampoo for Color-Treated Hair removes toxins such as D.H.T. from the hair and scalp skin a primary cause of hair thinning and hair loss. It helps to create a healthy environment for the hair and scalp while extending the life of color. BosDefense Volumizing Conditioner for Color-Treated Hair Bosley Pro BosDefense Volumizing Conditioner for Color-Treated Hair infuses weightless body and shine onto the hair and scalp while adding thickness and volume as it fortifies the hair shaft. Kelp extract helps protect from photo aging frequent washing and damage due to brushing. Contains LifeXtend technology to help stimulate production of root strengthening keratin protein. BosDefense Thickening Treatment for Color-Treated Hair Bosley Pro BosDefense Thickening Treatment for Color-Treated Hair creates thicker feeling hair while helping to protect and repair hair follicles. It also helps support healthy hair function and extends longevity of your color.