Honestly, I didn't feel any effect. I got it twice, but it doesn't seem like anything changed in particular. Rather, as for side effects, it wasn't like that the first time, but when I got it the second time, bruising on my face lasted for a month. I don't really know whether I managed it wrong or they injected it wrong. I also got it on my upper arms, but whether this has an effect... or not... it's ambiguous, so I don't recommend it.
This review is for a surgery review pursuing natural beauty.