And approximately how long will the injections last?
I usually have patients wait about 2 weeks to allow for the swelling to go down before having them return for more filler in their lips.
You can safely add more filler the same or next day. You may want to wait for your filler to settle within 7-12 days or so. Usually hyaluronic acid fillers last anywhere from 6-10 months in the lips. This is usually dependent on which product was used. When we speak or animate our mouth the muscle movement starts to slowly break the product down.