If I get pmma butt injections, how long do I have until it goes bad, and why do some girls have complications and others don't?

Thank you for your question.PMMA is not a good option and you should avoid it for your buttock augmentation.  You should also avoid silicone injections. As you mentioned, many have had complications, and many of those can be quite severe and disfiguring.We do not use PMMA in the buttock region here in Canada.Fat transfer is a good option (the Brazilian Butt Lift) yet if you don't have enough fat to give, please consider our excellent buttock implants.You are young now and it is even more important to consider the long-term effect and complications your chosen procedures.I wrote many blogs on buttocks on my website if you were interested.All the best,#DrMarcDuPere, Toronto plastic surgeon.

You call always save up for a BBL in the future but you will never be able to remove the PMMA from your bottom if you get s complication. 

Most have complications from PMMA injections, the problem is that it may be years before it gives you problems.Most difficult part of it all is that the material is very difficult to extract, usually leaving contour irregularities behind after extraction.