At TRESemmé we understand the frustration of dull, dry hair that's been damaged by styling appliances and other external factors. Keratin Smooth & Straight Shampoo range formulated with Keratin and Argan oil gives you 72 hours of frizz control whilst also detangles knots, boosts shine, adds softness and tames flyaways enabling you to achieve a hair look that is silky smooth, but still full of natural movement. To achieve the best results, try full Keratin Smooth & Straight hair products range. Start your routine by gently cleaning your hair with the TRESemmé Keratin Smooth & Straight Shampoo.