Arizona Esthetics State Board Practice Exam

Which of the following is a common reason for skin dehydration?

1. Excessive sun exposure

2. Low humidity

3. Both A and B

4. Too much exfoliation

The correct answer is: Both A and B

Skin dehydration occurs when the skin loses more water than it is able to retain, leading to a dry and often flaky appearance. Both excessive sun exposure and low humidity are significant factors contributing to this condition. Excessive sun exposure can strip the skin of moisture, leading to damage in the skin's barrier function. A compromised barrier makes it difficult for the skin to retain water efficiently, leading to dehydration. This is particularly relevant in sunny climates, where UV radiation not only affects skin health but also increases water loss. Low humidity, on the other hand, refers to a lack of moisture in the air. When the environment is dry, it pulls water away from the skin in an attempt to achieve balance. This is especially common in arid climates or during winter months when indoor heating can further reduce humidity levels. Under these conditions, the skin struggles to maintain its moisture levels, leading to dehydration. By understanding how both excessive sun exposure and low humidity impact skin hydration, it becomes evident why the combined effect of both factors is a common cause of skin dehydration.