At TRESemmé we understand the frustration of dull, dry hair that's been damaged by styling appliances and other external factors. Our Keratin Smooth & Straight conditioner formulated with Argan Oil & Keratin Protein gives you 72 hours of frizz control* and professional-quality smoothness for straighter hair with natural movement. It 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 our full Keratin Smooth hair products range. Start your routine by gently cleaning your hair with the TRESemmé Keratin Smooth & Straight Shampoo. Then follow with the Keratin Smooth & Straight Conditioner to fight frizz and smooth every strand. Then prep hair for styling with the Keratin Smooth & Straight Heat Protect Spray that helps protect your hair for temperatures up to 230 degrees. Finish with the Keratin Smooth & Straight hair oil for extra nourishment. TRESemmé delivers professional-quality and trend-inspired products so that you can get the power of professional gorgeous hair everyday. *Keratin shampoo and conditioner vs non-conditioning shampoo