Skin Barrier Repair Signs, Causes, and Treatments
Skin barrier is a protective layer made of skin cells, ceramides, cholesterol, and fatty acids that work like bricks and cement to keep moisture in and harmful bacteria, pollution, and allergy irritants out. But when you over-exfoliate with AHAs/BHAs, use harsh face washes, apply too much retinol, spend too much time in the sun, or […]
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