I am thoroughly convinced that Artefill should only be injected by how experienced the physician is in using this product. My dr trains other dr’s how to use it. I needed it in the tear troughs, sides of my temple (from volume loss) , a divot in my cheek, and my chin. Dr Pierone uses a micro cannula therefore preventing ANY bruising. When I have had Juvederm from a syringe I bruise horribly. He explained that it takes 2-3 times with Artefill because he does not want to overfill and one loses 20-30% of the initial dosage . Depending upon your skin your own collegan contributes to how the end result could be. I was very leary to do tear troughs but they came out beautiful. I could not be happier with my results.