I've heard a lot that aqua light injections are painful, but I didn't feel any pain at all . They say anesthesia is important to avoid pain . Well, the effects don't show right away and it takes at least two weeks. It doesn't make a huge difference, but there comes a time when your bare face becomes natural. However , after just one injection, I had to go through a few days of redness and I had trouble with the injection scar.