What is a crucial step to take before using heated styling tools on hair?

Applying a heat protectant is a crucial step before using heated styling tools on hair because it acts as a barrier against the damaging effects of high temperatures. When hair is exposed to heat from styling tools such as curling irons, straighteners, or hair dryers, it can lead to moisture loss, brittleness, and split ends. A heat protectant typically contains ingredients that help to coat the hair strands, reducing the direct impact of the heat and helping to maintain hair's integrity and shine. This protective layer minimizes the risk of heat damage, ensuring that the hair remains healthier over time.

While drying the hair completely can be important for certain styling techniques, applying a heat protectant specifically targets the protection from heat damage. Cutting the hair ends can help manage split ends but does not prevent new damage caused by heat. Lastly, brushing the hair thoroughly helps to detangle but does not provide any protection against the effects of heat. Thus, using a heat protectant is the most effective way to safeguard the hair during styling processes.