Use a broad-spectrum sunscreen SPF 30 or higher every day
Apply topical retinoids at night
Use azelaic acid
Use niacinamide
Use vitamin C serum
Use alpha hydroxy acids like glycolic acid or lactic acid
Use salicylic acid for acne-prone skin
Avoid picking or squeezing pimples
Use gentle, non-irritating skincare products
Treat active acne early to prevent new dark spots
Consider hydroquinone under medical guidance
Consider chemical peels from a dermatologist
Consider laser or light treatments from a dermatologist
See a dermatologist if spots persist or worsen