Is Bioplasty a safe and permanent option for buttocks augmentation?

The use of synthetic injectable materials for buttock augmentation is prone to complications. You would be unlikely to get the size increase you want without injecting a lot of material over multiple injection sessions. This is a recipe for complications such as hard areas, granulomas, and skin discoloration. If you are seeking an injectable buttock augmentation approach, use your own fat. While fat graft take can be variable, there is no risk of any long-term irreversible complications. 

There is NO permanent safe procedure for buttoct augmentation in my humble opinion. I have been in practice for over 30 years and find that buttock augmentation is one of the worst procedues done by doctors today. The fat transfer works, but usually goes away and anything permanent is doomed to eventual failure. But that is only my opinion .