
The Skin Barrier: Protecting Your External Shield From Cold
Every October, the same thing happens. The air turns dry, the heat comes on indoors, and skin that felt fine in September suddenly feels tight, flaky, or irritated for no obvious reason. It’s not your imagination, and it’s not just “dry skin.” It’s your skin barrier under seasonal stress. What Is the Skin Barrier, Really? Your skin barrier — sometimes called the stratum corneum — is the outermost layer of skin cells, held together by lipids, that keeps moisture in and irritants out. Think of it as a wall built from cells and mortar: the cells are your skin’s building









