Why Hair Turns Gray Is No Longer A Gray Area: Our Hair Bleaches Itself As We Grow Older

Wash away your gray? Maybe. Scientists have now solved a mystery that has perplexed humans throughout the ages: why we turn gray. These researchers show that going gray is caused by a massive build up of hydrogen peroxide due to wear and tear of our hair follicles. The peroxide winds up blocking the normal synthesis of melanin, our hair's natural pigment.

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