There's something about shiny, smooth hair that's full of natural movement that lets you take on the day with confidence. You can now get that style without having to go to a salon with TRESemmé Keratin Smooth Serum. This professional-quality serum also protects your hair from heat! The Keratin Smooth treatment transforms hair to achieve the glossy look of a professional style that is full of natural movement. This heat-protectant serum provides 24-hour protection against humidity. Use this anti-frizz hair serum after using TRESemmé Keratin Smooth Shampoo and Conditioner System for best results. Dispense one pump of the hair-smoothing serum into the palm of a hand and rub hands together, adding more if needed. Apply from the mid-lengths of wet hair through to the ends. It can also be used on dry ends for softness and shine. Since 1948, TRESemmé has been dedicated to providing professional-quality results to empower YOU to express your style. For over 70 years, TRESemmé has been dedicated to helping women look and feel their best. Every choice we make at TRESemmé, from the values we promote-such as not testing on animals and being PETA-approved-to the stylists we work with, down to the carefully selected ingredients we use, are made with intention and inspired by the latest trends and style.