Collagen, one of the most hyped ingredients in skin care, has made the leap to dietary supplements, and the excitement over what ingesting this protein may be able to do for your health isn’t dying down anytime soon. As research into the benefits of edible collagen grows, the protein is making its way into supplements and a variety of foods.

But like other forms of protein, there is debate over the best sources of collagen. Marine collagen, as the name implies, is derived entirely from sea-dwelling sources, such as fish scales, skin, and bones. And it’s been rising in popularity.

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