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. 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.