Milady Esthetics State Board Practice Test

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What is the typical pH range of healthy skin?

  1. 3-4

  2. 4-5

  3. 5-6

  4. 6-7

The correct answer is: 4-5

The typical pH range of healthy skin is indeed around 4 to 5. This slightly acidic environment is crucial for maintaining the skin's barrier function, protecting against pathogenic bacteria, and preventing irritation and inflammation. The skin’s natural acidity helps to keep the outer layer, known as the stratum corneum, intact and functioning properly. Maintaining this pH balance is essential because if the skin becomes too alkaline, it can lead to disruptions in barrier function, making the skin more prone to dryness, irritation, and infections. Similarly, a pH that is too acidic may also cause skin issues, such as irritation or sensitivity. Therefore, a pH range of 4 to 5 reflects the optimal condition for healthy skin, facilitating appropriate enzymatic activity and supporting the various functions of the skin.

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