- Tames frizz and flyaways while adding shine. Frizzy hair needs special treatment to control flyaways. Inspired by natures water-resistant camellia, Biolage SMOOTHPROOF Serum for frizzy hair provides humidity control and anti-frizz smoothness even in 97% humidity.* *When using the system of SMOOTHPROOF Shampoo, Conditioner and Serum vs. a non-conditioning shampoo. - Tames frizz and flyaways while adding shine - Keeps hair smooth and protects against heat styling tools and humidity - Paraben-free formula is also suitable for color-treated hair. Tames frizz and flyaways while adding shine Keeps hair smooth and protects against heat styling tools and humidity Paraben-free formula is also suitable for color-treated hair.