Should I avoid drinking any water or keep it minimal the day of my Juvederm lip filler appointment to add another ML?

You can consume water regularly before as well as after your Juvederm appointment. This will not impact your overall result nor lead to excess swelling. There are things to avoid in order to minimize bruising such as Vitamin E supplements, NSAIDS, and aspirin. Speak with your injector for a full list.

As a dermatologist, I would like to reassure you that you do not need to avoid drinking water on the day of your Juvederm lip filler appointment. Staying hydrated is important for your skin and overall well-being, and it will not affect the appearance of your lips in a way that would alter the injector's assessment of how much filler to use.

Drinking water won't cause your lips to swell artificially or influence the amount of filler you'll need. The lip filler procedure will be tailored to your desired outcome, and any swelling that occurs is a normal and temporary response to the injection, not related to your hydration levels.

If you have specific concerns or questions, I recommend discussing them with your injector before the procedure to ensure you're comfortable and informed about the process.