Use broad-spectrum sunscreen SPF 30 or higher every day
Reapply sunscreen every 2 hours when outdoors
Wear a wide-brimmed hat and UV-protective clothing
Avoid direct sun exposure during peak hours
Use topical vitamin C
Use retinoids at night
Use niacinamide
Use azelaic acid
Use alpha hydroxy acids
Use hydroquinone only under medical guidance
Try prescription lightening creams from a dermatologist
Consider chemical peels
Consider laser treatment
Consider intense pulsed light therapy
Use cryotherapy for isolated spots
See a dermatologist for diagnosis and treatment options