Best Treatment to Tighten Pores and Lighten Hyperpigmentation?

After battling moderate acne and severely oily skin for five years, I have finally cleared my skin and gotten rid of my oily skin (Accutane). However, I still have huge pores and acne scars. I am already using topical vitamin c in the mornings and retin-a at night. What treatment would give me the best results in fighting these things?

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