I had a slight hump on my nose, so I got Artecoll only on that area 3 years ago, and right now it seems about 10% to 20% remains. There were no side effects or other discomfort, and they say it is semi-permanent, but it does not maintain 100%. It seems to be a filler that lasts for a very long time at around the 10% to 20% level.
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