There are no bacteria in Restylane
Restylane is derived, in the lab, from the fermentation of equine streptococcus, which is a form of beta-hemolytic strep. The important point is that the bacteria are used to create the chemical that is then processed into Restylane. There are no streptococci in Restylane, just like there is not Botulinum bacteria in Botox and no bread mold in penicillin.
Any filler can result in an infection. However that would most likely be the result of bacteria on your skin or in your system, not...