I know one tsp=5 syringes which isn't a lot.
Thanks for your question, but it is a little nebulous and challenging to answer. Is there a limit that can be injected at one sitting? Is there a limit that can be injected over a certain time period? Is there a limit to the different types of fillers that can be used at once or combined? These are questions that are best answered by your injector. I suggest you focus on selecting a well qualified and experienced physician injector who can help guide you through your options and use the right amount of filler to achieve your ideal results. I have safely injected many syringes into a single patient at one sitting and gotten great results, but every case is different. Best of luck!