Brazilian Blowout Acai Protective Thermal Straightening Balm is a powerful heat-activated formulation that straightens waves/curls and tames frizzies while protecting hair from heat styling and environmental stress. Humidity resistant. Brazilian Blowout Acai Protective Thermal Straightening Balm contains an exclusive Brazilian Super-Nutrient Complex which reconstructs and strengthens damaged hair while creating a protective protein layer on the hair shaft to straighten smooth and seal the cuticle.