The dark circle around the eyes at your age is unusual and could indicate an insulin resistance. Skin is the mirror of internal health and to get a perfect skin you need to treat both ways - internally and externally.See a Dermatologist who will recommend a product for reducing puffiness and darkness and will advocate the correct method to use it. Avoid rubbing the eyes as it will increase pigmentation. Your Dermatologist may request a few blood tests to understand the blood chemistry and treat them specifically. Now-a-days many chemical peels also offers realistic promise- like glycolic acid and lactic acid peels.Dermapen in combination with mesotherapy also helps Acne scar and pores can be treated with subcisions, dermaroller, fractional CO2 lasers, chemical peels and likewise.Remember combining treatment modalities help to achieve desired results earlier. Your dermatologist will decide a treatment plan for you after a consultation.