Idaho Cosmetology Licensure Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 400

What tool is used to measure the thickness of the hair strand?

Hair gauge

The hair gauge is specifically designed for measuring the thickness of hair strands, which is essential in various cosmetology practices. This tool allows cosmetologists to assess the diameter of individual hair fibers. Understanding hair thickness is important for tailoring hair treatments, selecting the right products, and creating suitable hairstyles for clients.

In contrast, a comb is primarily used for detangling or styling hair rather than measuring it; hair scissors are for cutting and shaping hair, and while a ruler could technically be used to measure hair thickness, it is not the standard tool used within the cosmetology field for this purpose. The precision and design of a hair gauge make it the most appropriate tool for this specific measurement.

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Comb

Hair scissors

Ruler

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