Correct Treatment for my Acne?

Hi, I'm a South Asian female with acne. I have mild acne but I don't get several spots at one time--only a few spots. However, these few spots have become inflammed and some have developed into dark acne scarring.

I've been on contraceptive pills which hasn't worked. I have tried many creams such as Benzoyl Peroxide. I have oily combanation skin, and my skin does get flaky mainly due to acne creams. I have opted to try out Obagi Nu-Derm system. I'm not sure this is the right treatment. Please could you advise me if I should continue trying this treatment, as I have never tried invasive treatments such as Obagi before.