A thermal protectant is a hair care product designed to shield hair from damage caused by heat styling tools, such as hair dryers, curling irons, and flat irons. These products typically contain ingredients that create a barrier, helping to prevent moisture loss and reduce the risk of breakage or split ends. Using a thermal protectant is essential for maintaining healthy hair, especially for those who frequently style their hair with heat. By applying the product before using heat tools, individuals can help preserve their hair's natural texture and shine, ensuring it remains vibrant and strong over time.