44 Iron Guard Thermal Protection Spray - CHI 44 Iron Guard Thermal Protection Spray is a superior thermal protection spray that works from the inside out helping to protect hair from thermal damage and breakage. with a weightless formula with no added build up. Helps to seal the cuticle and works to prevent future damage.BenefitsHelps to seal the cuticle and works to prevent future damageVitamins and proteins add essential moistureProtects against thermal damageSuitable for all hair typesWeightless formula with no added build up - 44 Iron Guard Thermal Protection Spray