Hi and thank you for your question! Hyaluronic acid fillers such as Restylane are generally very safe and well tolerated, and they do have a limited life in body once injected and hence, we do need to repeat the injections form time to time (depending on the type of filler and the area of injection) to maintain the results. The same applies when filler is used for non-surgical nose job and there is no extra risk from that. I hope it helps and good luck!
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