Which type of product is used to shield hair from heat damage?

Heat protectant spray is specifically designed to shield hair from the damaging effects of heat styling tools, such as blow dryers, curling irons, and flat irons. This type of product typically contains ingredients that form a protective barrier around the hair strands, helping to minimize moisture loss and reduce damage from high temperatures. By using a heat protectant, individuals can maintain healthier hair while styling, as these products help prevent breakage, dryness, and other heat-related issues.

The other options serve different purposes: conditioners primarily focus on moisturizing and detangling hair, while moisturizers aim to add hydration. Hair gels are usually styling products meant to provide hold and shape to the hair rather than protective benefits against heat. Therefore, heat protectant spray is the most suitable choice for protecting hair from heat damage.