Matrix Biolage Shampoo Smooth Proof 13.5 Ounce 400 Milliliters Matrix Biolage Smoothproof Shampoo is an anti-humidity and anti frizz shampoo for those with unruly and frizzy hair that is hard to style and take care of. This paraben-free shampoo, formulated with water-resistant camellia is also appropriate for color-treated hair. The SMOOTHPROOF shampoo polishes your hair and encapsulates the hair strands with a defensive shield.