TRESemm Keratin Smooth Restore & Control Conditioner TRESemm Keratin Smooth Restore & Control Conditioner is a salon-inspired conditioner infused with keratin to nourish each strand & leave hair smooth, shiny & manageable. Used with TRESemm Keratin Smooth Restore & Control Shampoo, it transforms your hair, reducing frizz & making it gorgeously sleek, smooth & easy to style.