fillers can be in the lips and do not affect breast feeding.lip fillers and lift will not help the corners of your mouth, that needs botox, threads or a lip corner lift. sometimes an early face/neck lift helps. accutite can be a non invasive alternative. I would use daily hydration and plumping (see emeragecosmetics lip essentials kit). everyone can do a little filler when done well really gives nice hydration and plumping. Best, Dr. Emer.
I am not aware of any reason why you cannot have an injectable filler in your lips and not be able to continue to breast feed your infant. There is no direct transmission of product from your lips into your infant as the result of breast feeding since the filler stays put in the area it was injected. Now, I would not have filler placed while breast feeding but there is no harm if you already have it in your lips placed prior to breast feeding.