How much Juvederm do I need? (Photos)

Thank you for your question. Most patients wanting lip augmentation will begin the process with a single syringe, which is usually sufficient for the majority to produce natural, beautiful results. It is always best to adopt a conservative approach when filling the lips, since it is easier to add filler than it is to remove it after it has been injected. You can start with a single syringe, allow it to settle a bit, and then decide if you want a little more plumping or you are satisfied with your results.
When you are seeking lip augmentation using fillers, it is imperative that you choose an experienced injector to ensure the best possible results. While the smooth formulations of today’s fillers are an excellent way to enhance the lips, an inexperienced provider may leave you with asymmetries, lumps or an overfilled treatment area that doesn’t look natural. Good luck with your lip augmentation procedure and enjoy your results!

I generally start with 1 syringe and then wait and see how that settles. I do think it's smart to start with small as it is much easier to add filler than take it away. 

I would quote you a full syringe for the lips of juvederm ultraplus and then when the product settles I would reassess and see if more would be needed. 1 syringe is a good starting point