Idaho Barber Licensure Practice Exam 2026 – Your Complete All-in-One Resource for Exam Success!

A flat iron or curling iron is classified as a thermal styling tool because it uses heat to change the shape and texture of hair. Thermal styling tools function by applying direct heat, which can temporarily alter the hair's structure, allowing for various styles such as straightening or curling.

In contrast, a round brush, while useful in styling, does not generate heat on its own; rather, it is typically used in conjunction with a heat source like a hairdryer. A hairdryer with a diffuser, while also a thermal tool, is more specifically designed to distribute airflow evenly for styling wavy or curly hair. A comb is strictly a non-thermal tool that serves primarily for detangling or parting hair without applying any heat.