A cold perm is a hair treatment that creates curls or waves without the use of heat. Instead, it relies on chemical solutions to break and reform the hair's bonds. This method is often preferred for its ability to produce long-lasting curls while minimizing damage from high temperatures. During the process, the hair is wrapped around rods, and a cold perm solution is applied. After a set period, a neutralizer is used to lock in the new shape. The result is bouncy, voluminous curls that can enhance various hairstyles, making it a popular choice among those seeking a change in their look.