To treat your acne prone skin, you may follow these suggestions
1) use a salicylic acid
based face wash( saslic, saliac)
2) use a mild moisturiser( acne moist)
3) scrub your skin once a week and get all your comedones extracted regularly
4) use adapalene
gel over acne lesions
5) apply Glycolic acid
cream over face. This will reduce acne as well as pigmentation.
6) take few sessions of peels. This will reduce acne and pigmentation drastically.
Hope that answers your query. Take care.