Which technique is used to create curls or waves in hair with heat?

Prepare for your Hawaii Cosmetology License Test. Study with flashcards and multiple choice questions, each containing hints and detailed explanations. Ace your exam with confidence!

The technique that is used to create curls or waves in hair with heat is curling with a curling iron. This method involves wrapping sections of hair around a heated barrel, which then allows the hair to take the shape of the curl. The heat from the curling iron works by breaking down the hydrogen bonds in the hair, which are responsible for its natural shape. When the hair cools down after being heated, these bonds reform, permanently holding the curl or wave.

Using a curling iron is a direct and efficient means of styling hair into curls or waves, as it provides different barrel sizes that can create various sizes and types of curls, from tight ringlets to loose waves. This versatility is a key factor that makes curling with an iron a popular choice for hairstyling.

Other techniques listed, such as straightening with a flat iron or blow drying with a round brush, serve different purposes. A flat iron primarily straightens hair by applying heat directly to smooth out texture rather than creating curls. Blow drying with a round brush can add volume and some wave, but it is not primarily a method for creating defined curls like a curling iron. Setting with rollers can create curls, but it does not involve the use of direct heat in the same way

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