Alkaline products that disrupt the skin’s pH levels.Cosmetic products and soaps that take away natural moisture and oils from the skin.How Does the Skin Barrier Become Damaged?Įven though the skin barrier can help keep harmful external factors at bay, it can still become damaged by internal and external causes. Without the skin barrier, infections, chemicals, allergens and other harmful environmental elements could enter the body. The skin barrier acts as “your first line of defense from external insults, such as pollution, toxins and infections it also plays a role in temperature regulation and water loss through the skin,” she says. This brick wall: “is literally the barrier between your deeper layers of skin and internal organs and the external environment,” according to Reshmi Kapoor M.D., a board-certified dermatologist, Fellow of the American Academy of Dermatology and founder of Brooklyn Dermatology, a direct care dermatology practice in Brooklyn, New York.
In this comparison, skin cells called corneocytes are like bricks, and they’re held together by a mortar, which is a lipid membrane made up of ceramides, cholesterol and fatty acids. The outer layer, known as the stratum corneum or skin barrier, is structured similar to a brick wall. Your skin has several layers, each with its own function.
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