Matrix Total Results Mega Sleek Iron Smoother is a defrizzing leave-in spray that protects your hair during heat styling and provides all-day frizz control. Infused with smoothing Shea Butter to seal the cuticle, the spray delivers excellent heat protection (up to 450°F), and maximizes the performance of thermal tools to leave tresses sleek, smooth and healthy-looking with lasting style memory. It resists humidity to prevent frizz and unruly flyaways.