Redseal Hairstyling License Practice Test

Japanese thermal straightening is known for which characteristic?

1. Low heat application

2. Short processing time

3. Permanent hair texture change

4. No chemical usage

The correct answer is: Permanent hair texture change

Japanese thermal straightening is characterized by a permanent hair texture change. This technique utilizes both heat and chemical processes to alter the internal structure of the hair, leading to a long-lasting straightening effect. Once the hair has been treated with this method, it typically remains straight until new growth emerges, which retains the original texture. Other characteristics of Japanese thermal straightening include the use of higher heat levels than some other straightening methods, as well as a longer processing time. It also involves the application of specific chemical solutions to facilitate the change in the hair's structure, meaning there's indeed a reliance on chemicals, making the idea of "no chemical usage" inaccurate in the context of this method.