A "best heat protectant spray for straightening hair" is a product designed to shield hair from damage caused by the high temperatures emitted by styling tools like flat irons and blow dryers. An example of a widely used heat protectant spray is the Tresemm Thermal Creations Heat Tamer Spray.
Heat protectant sprays are essential for maintaining hair health, as they prevent dryness, breakage, and split ends. Additionally, they enhance styling outcomes by making hair more manageable and shiny. A key historical development in heat protectant technology was the introduction of silicone-based formulas, which offer superior protection against thermal damage.