TRESemmé Keratin Smooth Conditioner is designed to help achieve smooth, frizz-free hair. It contains keratin, which can strengthen and smooth the hair cuticle, making it more manageable and shiny. This conditioner is often recommended for those with wavy or frizzy hair types, as it aims to provide moisture while also enhancing the overall texture. It’s usually applied after shampooing, left in for a few minutes, and then rinsed out.