Side effects? Sagging? It seems a little bit, and the wrinkled part is a little uncomfortable? Other than that, it's fine. It's almost to the point where I don't care, so I think I'm more satisfied with the improved asymmetry. But these days, I'm thinking about getting plastic surgery again. Like the forehead line, eyebrow bone, and fat grafting around the nasolabial folds. It seems greed is endless.