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| | What is Collagen? Facts about Collagen Injections – Treatment, Benefits, Cost, and More (via CobWeb/3.1 ... (Site not responding. Last check: 2007-09-18) |
 | | Collagen is also used to create fuller lips and cheeks and can be used to treat areas of the chest, back, and neck; however, facial collagen injections are by far the most common. |
 | | Collagen is a protein found in bone, cartilage, skin, and tendons; there are 27 different types of naturally-occurring collagens in the body. |
 | | Of the four types of collagen injections, the cost of bovine treatments such as Zyderm® and Zyplast® is usually the least expensive, but as the collagen is not human, the risk of allergic reaction is often higher. |
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