What is the process of permanently altering the natural wave pattern of hair described as?

• A. Chemical texture service
• B. Hair straightening
• C. Thermal processing
• D. Color treatment

Answer: (A)

Permanently altering the natural wave pattern is achieved through a chemical texture service. This type of service uses chemical solutions to break and then re-form the disulfide bonds in the hair, allowing the curls or waves to be rearranged into a new pattern that lasts as the hair grows. Because the change is bond-based and lasting, it’s considered permanent until new growth appears. Color treatment does not change the curl pattern, and thermal processing relies on heat to alter texture but doesn’t permanently rearrange bonds in the same way.