Use sunscreen daily on the affected area
Avoid picking, squeezing, or scratching bumps
Apply a gentle exfoliant like salicylic acid or glycolic acid
Use products with niacinamide
Try azelaic acid
Use retinoids at night if tolerated
Keep the skin moisturized
Treat the original bumps to prevent new dark spots
Use hydroquinone only if recommended by a dermatologist
See a dermatologist if the spots do not fade or keep returning