Collagen fillers

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Collagen implants, both animal and human derived, have been used for soft tissue augmentation for many years. Bovine collagen fillers were the most popular injectable implants for nearly two decades in the United States. Since then, human bioengineered collagen products have been available in addition to hyaluronic acid-containing fillers. This article outlines the different types of injectable collagen implants, injection techniques, preferred methods of treatment, and possible adverse reactions to the injectable materials.

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