FILLER UP: BOVINE (COW-BASED) COLLAGEN
In the early 1970s, a team of researchers at Stanford University in California began tinkering with bovine (cow-based) collagen. The results were very promising and finally, in 1977, the first bovine collagen injection with the trade name Zyderm hit the market. Its approval for use in the UK followed and today it maintains a level of unrivalled popularity. Two other versions of bovine collagen. Zyderm II and Zyplast, soon followed and, depending on the patient’s needs, any of the three can be used, either exclusively or in combination.By now you’re probably asking yourself. Why from cows? First, the collagen found in cows is very similar to human collagen and as a result, only an estimated 3% of the population is allergic to it. Before any treatment, a series of skin tests paced over a four-week period usually rule out the possibility of an allergic reaction, but even so, it’s been found that 1 in 1.000 patients will experience the redness and swelling at the site of the injection associated with an allergic reaction. Fortunately, the reaction always clears up on its own and doesn’t’ affect your general health. Secondly, and perhaps most importantly, bovine collagen delivers an extremely natural result that so far has proven difficult to replicate with a synthetic substance or even a human one.*59\82\8*
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