· Potent, leave-in treatment is clinically-proven to instantly strengthen hair and reduce breakage by 50% in just one use· Activated by the heat of your blow dryer, it infuses hair with sulfur-rich blue sea kale, protein-building amino acids + B vitamins to instantly help fortify key internal sulfur bonds· Super-charged heat protectant keeps hair safe from heat-damage, color fade + breakage· Add to damp hair before blow drying for instantly stronger, smoother, shinier, healthier-looking hair