I used to have really deep set acne marks and a lot of breakouts all over my face. I went to the dermatologist and their treatment works only temporarily. Because I was very desperate, I tried using this skincare line, and in 3-4 weeks, my skin are visibly clearer and smoother. No acne scars, no visible pimple and very lightweight, suitable for oily prone skin. I mostly have dry skin, so I definitely need to use another layer of cream on top.This serum is my 6th bottle, and definitely going to purchase again once I ran out.