Use broad-spectrum sunscreen SPF 30 or higher every day
Apply a retinoid at night
Use azelaic acid
Use niacinamide
Use vitamin C serum
Try alpha hydroxy acids like glycolic acid or lactic acid
Use salicylic acid for acne-prone skin
Avoid picking or squeezing pimples
Keep skin moisturized
Use gentle cleansers and avoid harsh scrubs
Consider hydroquinone for short-term use
Try chemical peels with a dermatologist
Consider microneedling with a dermatologist
Consider laser treatments with a dermatologist
Treat active acne to prevent new dark marks
Be consistent for several weeks to months