This high-performance, professional-grade leave-in formula is highly concentrated and contains no added water, delivering up to 96 hours of frizz control and intense humidity protection. Developed and approved by hairdressers, it features a heat-activated hydrophobic seal that locks in moisture while repelling frizz. The lightweight, smooth vegan formula is fast-acting and designed for use with all hot tools—including blow dryers, straighteners, curling irons, and diffusers—offering heat protection from 120°F to 450°F. It keeps working through up to five shampoos, leaving hair instantly smoother, shinier, and frizz-free. Defy humidity and enjoy vibrant, sleek hair all weekend long—no touch-ups needed.