Hi there — this is actually a great question, and one that many people don’t think to ask. After lip fillers, the first 24–48 hours are the most important. During that time, your lips are swollen, slightly inflamed, and the filler is still settling into place. Because of that, I usually recommend being a bit gentle around the mouth area. An electric toothbrush is generally safe, but I suggest using light pressure for the first day or two. If your toothbrush has a very strong vibration setting, consider switching to a softer mode temporarily. As for a Waterpik, it’s also typically fine — but again, avoid high-pressure settings right away. Excessive vibration or pressure immediately after injections could theoretically contribute to swelling or minor filler displacement, especially in the first 24 hours. After about 48 hours, you can usually return to your normal oral hygiene routine without concern. The key takeaway: First 24–48 hours → be gentle After that → normal use is typically fine You’re smart to think about this. Protecting your results in those first couple of days really does make a difference.