I think this quite possibly an excellent filler in some aspects, but it did not work well at all for what I was looking for. I have very deep hollows under the eyes. The Belotero draws a great deal of water to it (one of the reasons I think it may work well elsewhere) and therefore created gigantic bags under my eyes.
My excellent doctor immediately had me come in and injected a steroid into the regions and all is just fine. Let me tell you though, if you've ever had steroid injections under the eyes, you have not experienced some serious discomfort. Fortunately, it's pretty quick and then it's over.
So I will be trying a small amount of Restylane next, as it's not supposed to draw as much water to it. If you're looking for a filler around the mouth, etc., I have the feeling this would work just fine.