Expert selection. Lower sulfates (vs. Tresemme leading shampoo). 7 day smooth system. Our Philosophy: This range has been carefully selected for its latest technology, driven by our salon heritage we work with our stylists to deliver expert solutions from salon quality products. Tresemme - Professional, affordable. Why Use 7 Day Keratin Smooth Shampoo? Infused with Keratin and made with lower sulfates (vs. Tresemme leading shampoo), this product gently cleanses and removes impurities. For 7 days of salon-smooth styles (Enjoy your gorgeous, salon-smooth hair for the week or up to 3 washes), use as the first step with 7 day Keratin Smooth conditioner and 7 day heat activated treatment. Gentle enough for everyday use and on color treated hair. For more information on how to get 7 days of salon smooth styles, visit tresemme.com. Made in USA.