- Controls frizz and flyaways for smoother, more manageable hair. Frizzy hair is prone to excess flyaways when exposed to static and humidity. Inspired by natures water-resistant camellia, Biolage SMOOTHPROOF Leave-in Cream for frizzy hair provides humidity control and anti-frizz smoothness. - Controls frizz and flyaways for smoother, more manageable hair - Static is controlled and hair is detangled with a hydrophobic shield - Paraben-free formula is suitable for color-treated hair. Controls frizz and flyaways for smoother, more manageable hair Static is controlled and hair is detangled with a hydrophobic shield Paraben-free formula is suitable for color-treated hair.