Milady Esthetics State Board Practice Test

What role do lipids play in skin care?

1. They color the skin

2. They improve hydration and smoothness

3. They act as preservatives

4. They provide sun protection

The correct answer is: They improve hydration and smoothness

Lipids play a crucial role in skincare primarily by improving hydration and smoothness. They are essential components of the skin barrier, which protects the skin from environmental stressors and helps retain moisture. When lipids are present, they create a barrier that prevents water loss, thus enhancing the skin's hydration levels. Additionally, lipids can give the skin a smoother appearance by filling in the gaps between skin cells, making it look plumper and more youthful. This hydrating effect is especially important for maintaining the overall health of the skin, as a well-hydrated skin barrier also functions more effectively in protecting against irritants and maintaining elasticity. In summary, lipids not only enhance hydration but also contribute to the skin's smooth texture.