TRESemme Pro Collection Keratin Smooth Shampoo 700 mL. In life, sometimes you've got to take the rough with the smooth. But with hair, you really shouldn't have to. Getting a smooth, frizz-controlled style shouldn't mean settling for limp locks or poker straight hair that barely moves. Well, say hello to Keratin Smooth, as seen backstage at some of this season's runway shows. TRESemme Keratin Smooth, with Keratin and Marla oil from Africa, gives you 72 hours of frizz control and 5 smoothing benefits in 1 system Keratin shampoo and conditioner - for hair that's silky smooth but still full of natural movement. Anti frizz, hair repair, detangles knots, boosts shine, adds softness and tames flyaway.