North Dakota Cosmetology Practice Exam

Question: 1 / 410

What type of solution has a pH below 7?

Alkaline Solution

Neutral Solution

Acidic Solution

A solution with a pH below 7 is classified as an acidic solution. The pH scale ranges from 0 to 14, where a pH of 7 is considered neutral, indicating a balance between hydrogen ions (H⁺) and hydroxide ions (OH⁻). When the pH drops below 7, it signifies a higher concentration of hydrogen ions, which is characteristic of acids. This is crucial in cosmetology, as many formulations, such as facial cleansers, shampoos, or conditioners, are designed to have specific pH levels to maintain skin or hair health. Knowing that acidic solutions can help in exfoliation, break down oils, or adjust the scalp's environment is essential for effective treatment and product recommendations in a beauty setting.

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