Whether youre lusting after smooth curls, soft waves, or straight, shiny strands, TRESemmé Keratin Smooth Shampoo promises up to 72 hours of frizz control.* Part of the TRESemmé Keratin Smooth collection, this keratin shampoo packs five smoothing benefits into one system to fight frizz, detangle knots, boost shine, add softness and tame fly-aways. The professional-grade formula is enriched with keratin proteins to help strengthen and smooth, while luxurious marula oil adds softness and shine. The result is frizz-free hair that feels silky and smooth and full of natural movement.