Walk into any beauty boutique or a drugstore and you will find shelves stocked to the brim with products that aim to protect and rejuvenate your skin. Some exfoliate, others plump, while the rest moisturise.These products have one thing in common – they all act on your body’s outermost layer which is your skin barrier. But what is your skin barrier? What is its purpose? And what can cause damage to it?
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