What Is the Skin's Moisture Barrier?

Every day, your skin is exposed to irritants (think: environmental pollution, sun exposure, harsh climates) that can make your complexion look dull, dry and tired. The best defense? The skin’s moisture barrier.

If you don’t know what a moisture barrier is, it’s exactly what it sounds like: a shield for your skin. As the outermost layer of your skin, the barrier protects it from external assaults that can wreak havoc. “The outermost layer of our skin, called the stratum corneum, serves as a barrier to loss of body water,” says board-certified plastic surgeon and Skincare.com consultant, Dr. Jeanne Eyde. “Not only is it a barrier to the outflow of water but it also serves as protection against the entry of perils such as bacteria and allergens from the environment.” A healthy barrier can help keep moisture in and bad bacteria out. Think of it as personal security detail for your skin, there to help protect and shield your body’s largest organ.

How to Tell If Your Skin Barrier Has Been Compromised

If your skin barrier is compromised, you can experience a plethora of unwanted side effects. “Signs of damage to the skin barrier include increased sensitivity such as itching, redness, irritation, breakouts, dryness, tightness, rashes and broken capillaries,” Dr. Eyde says. Additionally, it may be more difficult for your skin to heal itself from these side effects. 

How to Strengthen Your Skin Barrier

If you suspect that your skin barrier has been compromised — or you simply want to keep it from getting to that point — there are a few things you can do. In order to obtain strong barrier function, Dr. Eyde suggests taking steps to restore balance. “Begin by washing the skin only twice daily with lukewarm water and reducing exfoliation to once a week with a gentle product,” she says. “And protect the skin daily with a broad-spectrum sunscreen.” Broad-spectrum SPF 15 or higher can help shield your skin from the sun’s harmful UV rays, so be sure to apply liberally prior to heading outdoors and reapply at least every two hours — even if it looks like it’s a cloudy day.

Keeping your skin hydrated is also vital. Dr. Eyde recommends moisturizers formulated with lipids, ceramides or glycerin to help improve a declining moisture barrier. Try SkinCeuticals Triple Lipid Restore 2:4:2, a cream formulated with a maximized concentration of pure ceramides, natural cholesterol and omega fatty acids. In addition to helping reinforce and hydrate the skin’s barrier, the formula also supports the skin’s natural self-repair to reduce visible signs of premature and accelerated aging. 

Dr. Eyde also recommends increasing your water intake, eliminating smoking and excess alcohol consumption to help restore hydration. 

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