What does an exothermic perm require to function effectively?

An exothermic perm relies on the heat generated by the chemical reaction that occurs when the perm solution is applied to the hair. This type of perm uses chemicals that cause an exothermic reaction, which means they release heat as they process. This heat is crucial because it helps to open the hair cuticle and allows the perm solution to penetrate more effectively, resulting in a stronger curl formation.

The self-heating nature of an exothermic perm eliminates the need for external heat sources, such as heated tools or appliances, making it unique. While other methods may require a chemical heat activator, a specially designed dryer, or low temperatures for processing, the essential factor for an exothermic perm is the warmth generated inherently by the chemical reaction itself. This aspect is critical for achieving optimal results in perming.