What it is: A velvety, leave-in styling treatment that provides up to 72 hours of frizz control, smoother blow-dries and defined air-dries. Who it's for: All hair types and textures, including colored, chemically-treated and gray hair.What it does: The styling treatment makes blow-drying strands quick and easy, and it helps keep your hair frizz-free on days you let it air dry. No.6 Bond Smoother features patented OLAPLEX Bond Building Technology™ to repair broken hair bonds. This styling treatment smoothes, strengthens, and protects hair from everyday damage and chemical services. Now in a nothing-left-behind airless pump. Made in the USA