TRESemmé Keratin Smooth Shampoo with hydrolyzed keratin helps tame unruly hair, leaving it silky, shiny, and salon-smooth every day. Powered by the exclusive Pro Style Technology™, developed by top haircare experts, this shampoo strengthens hair from root to tip while protecting its inner structure. From the very first wash, you’ll notice smoother, more manageable locks with reduced frizz.