I received Aladdin peeling 3 times at 2-week intervals. The back scar was very stressful, but it has really improved a lot. Instead, every time I received it, it was very painful because it got stuck in the microneedle, etc. Especially after the first time, the aftereffects were no joke. After the third time, it definitely hurt less than the first time, perhaps because my skin had become stronger! I'm willing to get it if I have back trouble again in the future.