The skin barrier is the outermost layer of the skin, primarily composed of lipids and proteins. It serves as a protective shield against environmental factors such as bacteria, pollutants, and allergens. A healthy skin barrier helps retain moisture, preventing dryness and irritation. When the skin barrier is compromised, it can lead to various skin issues, including eczema, psoriasis, and increased sensitivity. Factors like harsh soaps, extreme weather, and certain skin conditions can damage this barrier. Maintaining its integrity is essential for overall skin health and comfort.