Use broad-spectrum sunscreen SPF 30 or higher daily
Reapply sunscreen every 2 hours when outdoors
Wear a wide-brimmed hat and protective clothing
Avoid tanning beds and minimize sun exposure
Apply topical retinoids at night
Use vitamin C serum in the morning
Try hydroquinone under medical guidance
Use azelaic acid or kojic acid products
Consider chemical peels
Consider laser therapy or intense pulsed light
Consider cryotherapy for isolated spots
Use prescription treatments from a dermatologist
Maintain consistent skincare use for several weeks to months
Seek medical evaluation for changing or suspicious spots