Belotero, although new to the United States, has been used in Canada and Europe extensively. In fact, like the Juvederm family of products, there are a wide variety of Belotero fillers. Unfortunately, only Belotero Balance is offered in the United States. After studying the physical properties of a number of fillers, I have found that cohesivity is an important property that distinguishes the Belotero line. Belotero Balance has been used in lips, fine lines, and delicate areas like tear troughs. My experience with this product has been very positive, and when used correctly, will not cause any lumpiness. I highly recommend it, and use it extensively in my practice.