So.....I bought this because I'm prone to hormonal acne around my chin and jawline and I'm constantly searching for something to help combat that. Unfortunately for me, this does not stop breakouts form happening BUT is makes the acne go away a bit faster and keeps the scarring to a minimum. But the absolute best thing this did was completely fix my complexion. It reduced the redness on my face within a few days and made a lot of my acne scarring disappear (or at the very least fade dramatically.)I also had some "ice pick" and "boxcar" acne scarring on my cheeks (a derm looked at these and said I would need laser resurfacing to correct these). This serum has made this scars MUCH less visible and when I have makeup on you can't even seen them.
I use this once in the morning and once before bed and put it all over my face. If you stick to the routine it works wonders.