NKST (Natural Keratin Smoothing Treatment) is a multi-award-winning keratin treatment that penetrates the cuticle to reduce frizz and curl, making the hair stronger, smoother and healthier for up to 5 months. This revolutionary smoothing treatment is powered by Signature Keratin to help repair damage, eliminate frizz, cut styling time and deliver a soft, smooth and shiny finish. What It Does ? Blocks humidity and eliminates frizz. ? Formulated with our Signature Keratin for stronger, healthier hair. ? Instantly repairs damage. ? Increases manageability. ? Delivers luminous shine. ? Dramatically reduces blow-dry time. ? Enhances color vibrancy. ? Cumulative results. ? Results last up to 5 months. ? Voted behindthechair.com?s ?Favorite Chemical Smoothing Service? 9 years in a row. ? Winner of the Beauty Launchpad 2019 and 2020 Readers Choice Award for ?Favorite Smoothing Service?. What Else You Need to Know Kit Includes: ? 1 - Keratin Pre-Treatment Shampoo 16 oz. ? 1 - Natural Keratin Smoothing Treatment 16 oz.. *Totaling 32 fl. oz. *Winner of Beauty Launchpad's Favorite Smoothing Treatment , 9-time award-winner of Behindthechair.com Stylist Choice Award for Favorite Chemical Smoothing Service