I got lip filler at a clinic in Hongdae that’s famous for lips. If there’s filler left from another place, you can get it after dissolving it. If you show them a photo of the lips you want, they roughly match it.
While giving the injections, they say things like “Oops, I’m sorry” and “It’ll sti~ng” without much soul, but it’s not bad. Maybe because they do so many lip fillers, they do it quickly and skillfully.