Hello. Thank you for writing to us at healthcaremagic Post-Inflammatory Hyperpigmentation /PIH is a common complication of acne. Treatment of acne would prevent further PIH spots from developing. I suggest you to use topical benzoyl peroxide as a spot treatment for active acne and a topical retinoid e.g Adapalene gel during night, to be applied to the whole affected area. Topical retinoids also helpful in fading away the spots/ PIH. Oral antibiotic may also be required if your acne is inflammatory i.e red, painful or pustular. Specifically for PIH you may use a pigment lightening agent e.g kojic acid Or hydroquinone, once or twice daily. You may also opt for a few sessions of chemical peeling from a dermatologist along with topical treatment. Salicylic acid peel is particularly useful for acne and glycolic acid peel for PIH. I suggest you to visit a dermatologist in your region. Your dermatologist will visually assess and advice accordingly. Regards