Delaware Cosmetology and Barbering Practice Exam

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What does pH measure in hair care products?

The concentration of moisture
The acidity or alkalinity of the product
The overall effectiveness on hair
The amount of essential oils present

The correct answer is: The acidity or alkalinity of the product

pH measures the acidity or alkalinity of hair care products, which is crucial for understanding how a product will interact with hair and scalp. The pH scale ranges from 0 to 14, with lower values indicating acidity, neutral at 7, and higher values indicating alkalinity. Hair and scalp typically have a slightly acidic pH, around 4.5 to 5.5. Using products that are pH-balanced helps maintain the natural health and integrity of the hair cuticle and the scalp's environment. If a product is too acidic or too alkaline, it can disrupt this balance, leading to issues such as dryness, damage, or irritation. Therefore, knowing the pH level of hair care products is essential for choosing the right products for specific hair types and conditions.