What are "cold waves"?

Cold waves refer to a method of permanent wave styling that utilizes chemical solutions to alter the structure of the hair without the application of heat. This process involves wrapping the hair in perm rods and using an alkaline solution, which allows the hair's natural bonds to break and reform into new shapes. The term "cold" indicates that the process is achieved at room temperature, contrasting with traditional wave techniques that might use heat.

The chemical solutions work by opening the hair cuticle and allowing the chemicals to penetrate into the cortex, where they can successfully reshape the hair. This technique is particularly advantageous for creating waves or curls in hair that is resistant to heat styling, making it an important part of a barber's repertoire for achieving various hairstyles.

In other contexts, methods for drying hair, treatments for dry scalp, or styles of haircuts do not involve the specific chemical processes or techniques associated with cold waves, which clarifies why these alternatives do not correctly define the term.