Use broad-spectrum sunscreen SPF 30 or higher every day
Reapply sunscreen every 2 hours when outdoors
Wear a wide-brimmed hat and sunglasses
Avoid direct sun exposure during peak hours
Use topical vitamin C
Use retinoids at night
Use niacinamide products
Use alpha hydroxy acids such as glycolic acid or lactic acid
Use azelaic acid
Use hydroquinone only under medical guidance
Try prescription lightening creams from a dermatologist
Consider chemical peels
Consider laser treatments
Consider intense pulsed light therapy
Consider microdermabrasion
See a dermatologist for persistent or changing spots