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Learn that functions of collagen as well as its role in face creams

As most of us know that Face and body creams that are currently marketed to women to "rejuvenate the skin and get rid of fine lines and wrinkles" comprise large quantities of collagens (in some cases nearly 500 times more than the amounts currently in skin tissue). Why scientifically would this be the case? Do they should they really work?  Defend your answer

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