First I would like to say how important it is to do your homework. I researched my options for volume loss in the face and decided on Artefill. I found a physician who used the micro cannula and had experience with over 5000 injections using fillers.The initial treatment can range from two to four vials. I had 12 Artefill vials placed in my face, mostly in the cheek and under eye area. ( During the course of five months. ) I would recommend this product based on my experience and results. I have provided before and after photos. If anyone has any questions I will do my best to answer them.