Use broad-spectrum sunscreen daily
Apply vitamin C serum
Use niacinamide
Try azelaic acid
Use retinoids at night
Exfoliate gently with AHAs or BHAs
Avoid picking or scratching skin
Keep skin moisturized
Consider hydroquinone if recommended by a dermatologist
Try kojic acid
Use alpha arbutin
Use licorice extract
Treat acne early to prevent new marks
See a dermatologist for stubborn dark marks