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Can collagen supplements improve your skin? Here's what the research shows

03:43
Collagen is the most abundant protein in our bodies. It helps keep our skin firm and elastic. But as we age, the amount and quality of that collagen declines. And some people turn to supplements. (iStockphoto/Getty Images)
Collagen is the most abundant protein in our bodies. It helps keep our skin firm and elastic. But as we age, the amount and quality of that collagen declines. And some people turn to supplements. (iStockphoto/Getty Images)

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