The writer is a science commentator
The phrase “skin-deep” is often used dismissively, to refer to something as superficial or lacking complexity. That feels like a misnomer when it comes to skin itself.
It is an astonishing organ, essentially a multi-layered, waterproof body bag that keeps other organs in but pathogens and the outside world out. Our skin typically accounts for about 15 per cent of body weight and renews itself every month. We each shed millions of skin cells every day.
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