New Jersey Cosmetology and Hairstyling Practice Exam

Thermal straightening is the process that utilizes high heat to straighten hair without the use of chemicals. This method often involves tools like flat irons that apply intense heat directly to the hair strands, effectively altering their structure temporarily. The heat works by breaking down the hydrogen bonds in the hair, allowing it to be reshaped and straightened.

In contrast, chemical straightening treatments involve the use of chemical solutions that alter the hair's natural structure permanently, which is not the case with thermal methods. Relaxing treatments also employ chemical agents specifically formulated to relax curly or wavy hair, and keratin treatments often contain both heat and chemicals but focus on depositing keratin in the hair to reduce frizz and add shine.

The effectiveness and results of thermal straightening will depend on the hair type and the technique used, but it is known for providing immediate and smooth results without the long-term alterations associated with chemical processes.