Hyaluronic Acid Butt Injections?

Hmmm, very unlikely.  That would have been very expensive procedure and would only last for may be 4 months.  I dont really know how you would find out to see what you have injected other than talking to the physician.

Good luck.

Hyaluronic acid fillers supplied by reputable vendors in the United States are safe.  However, they typically come in 1cc syringes at a cost of around $600-700 per syringe.  Because of their cost, they are used almost exclusively in relatively small volumes for facial enhancement.  The cost of these fillers in sufficient volumes for buttock enhancement make them cost prohibitive.  Fat grafting is a much better option!  Best of luck!