Milady Esthetics State Board Practice Test 2026 - Free Esthetics Exam Practice Questions and Study Guide

Skin is considered dry primarily due to its inability to produce sufficient oil, which is essential for maintaining moisture and protecting the skin barrier. Oil, produced by sebaceous glands, plays a critical role in keeping the skin hydrated by forming a protective layer that prevents water loss. When the skin does not produce enough oil, it can lead to symptoms such as tightness, rough texture, and a heightened sensitivity to environmental factors.

While a flaky appearance can be associated with dry skin, it is often a symptom rather than a direct criterion for defining skin as dry. Similarly, a lack of moisture can contribute to the feeling of dryness, but the core issue stems from inadequate oil production. Excess production of oil, on the other hand, is characteristic of oily skin rather than dry skin. Thus, the fundamental characteristic that designates skin as dry is the insufficient production of oil.