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Nature’s Sunscreen: How Skin Bacteria Protect Us From UV Rays

Nature’s Sunscreen: How Skin Bacteria Protect Us From UV Rays

Sunlight creates a molecule called cis-urocanic acid on our skin, which weakens the immune system and increases the risk of skin damage and cancer. Scientists discovered that "good" skin bacteria act as a natural shield by producing an enzyme that destroys this harmful molecule. This could lead to "living sunscreens" and probiotic creams that use our own microbes to keep skin healthy and prevent disease.
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