Professional treatments. i-23 Complex. Repairs, restores, restructures. Salon professional experience since 1928. Our transformative formulas, containing the i-23 Complex, a customized blend of proteins and conditioners, are designed to treat even the most damaged hair. Moisturize + Replenish Collection features our classic light and soothing scent. We've infused these formulas with avocado & olive oils to help hydrate and quench dry, dull hair. 10x more moisturized hair (after using Infusium Moisturize + Replenish Shampoo, Conditioner and Original Leave-In Treatment in a consumer usage study).