Biolage Smooth Proof Shampoo is the solution to frizzy, damaged, unmanageable hair that can be difficult to control and style. Inspired by nature’s water-resistant camellia, Biolage Smooth Proof Shampoo for wavy, curly or frizzy hair provides humidity control and anti-frizz smoothness even in 97% humidity, giving you perfectly smooth hair for up to 72 hours.* *When using the system of Smooth Proof shampoo, conditioner and serum vs. a non-conditioning shampoo.