The instant you spray Joico Heat Hero Glossing Thermal Protector on, this brilliant hair guardian springs into action, protecting each strand from the thermal assault of blow-dryers, flat irons, and other damaging heat-styling tools. Along with it? A healthy, glossy sheen that fortifies strands and locks out hair-dulling pollutants. Features & Benefits: Thermal protection up to 450°F (232°C) Heat-activated, split-end mender Boosts Shine Protects against pollution Paraben-free