Helps your hair restore its keratin leaving them visibly straight and smoother. Infused with light-weight Argan Oil, this professional shampoo nourishes each strand of your hair making them silky smooth and easier to manage. This unique combination of Keratin and Argan Oil conditions and strengthens your hair and provides them hydration and elasticity. With its dual action, TRESemmé Keratin Smooth Shampoo helps you get up to 100% smoother hair with more shine. Its lower sulfate formulation and patented micro-moisture technology smoothens and protects dry hair from damage.