North Dakota Barber Practice Exam 2025 – Comprehensive Prep Guide

Question: 1 / 400

What does the term "pH" refer to in the context of hair care products?

The measurement of water temperature

The measure of acidity or alkalinity of a solution

In the context of hair care products, the term "pH" refers specifically to the measure of acidity or alkalinity of a solution. The pH scale ranges from 0 to 14, where a pH of 7 is considered neutral. Solutions with a pH lower than 7 are acidic, while those with a pH higher than 7 are alkaline.

Understanding pH is crucial in hair care because it can significantly impact the health and appearance of hair. For example, products with a lower pH can help to tighten the hair cuticle, leading to smoother and shinier hair, while higher pH products can open up the cuticle, making hair more susceptible to damage and frizz. Hair itself has a natural pH of around 4.5 to 5.5, and using hair care products that align with this pH range promotes better hair health and manageability.

The other options provided relate to different aspects of hair care and product formulation, but they do not accurately define what "pH" measures.

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The percentage of active ingredients in a product

The level of moisture in the hair

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