Protect your alternative hair from heat damage with Jon Renau’s heat protectant. Heat Treat Thermal Spray is heat activated and formulated for use with flat irons, curling irons, and hot rollers. This non-sticking thermal protectant and styling spray prevents heat damage by permitting a clean release from styling tools. Hair is left brushable and volumized. For use with both human hair and (HD) heat-resistant synthetic wigs, toppers, hairpieces, or extensions.