Hello, drink a glass of fresh milk before going to bed every night, stick to it for a long time, wash your face with warm water and a small amount of white vinegar, eat more fresh fruits and vegetables rich in vitamin C, avoid the sun's ultraviolet radiation, eat regularly, don't stay up late, have a good whitening effect, properly use hydrating mask and mild whitening skin care products, and it is best not to rely on drugs for whitening, so as not to affect your health.