Collagen and Injectable Fillers (cont.)
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Why Aren't Creams Containing Collagen Enough to Smooth Out Lines?
Collagen creams work only on the skin surface. A moisturizer with or without collagen cannot penetrate the skin and is not designed to be absorbed. No moisturizer can undo the cumulative effect of collagen loss. Creams primarily slow the rate of water loss from the skin and help keep the skin supple.
WebMD Medical Reference
Medically Reviewed by a Doctor on 6/12/2012