Biolage Smooth Proof Shampoo & Conditioner DuoControl frizz, smooth flyaways, and boost shine with the Biolage Smooth Proof Shampoo & Conditioner Duo. Inspired by the anti humidity power of camellia, this smoothing system helps tame unruly, frizzy, or hard to manage hairkeeping it sleek, soft, and controlled even in humid conditions. The Smooth Proof Shampoo gently cleanses while creating a humidity resistant shield, helping to reduce frizz and improve smoothness from the very first wash. The