What about the long spray?

Topical drugs: decolorant, such as 3% hydroquinone cream, 3% hydrogen peroxide, etc.

Dietotherapy: Always eat foods with high vitamin C content, such as jujube, leek, spinach, orange, radish, Chinese cabbage, wax gourd, tomato, green onion, persimmon, celery, cucumber, pear, banana, watermelon, litchi and walnut.

Seek treatment from a professional beauty institution. There are many treatment methods and techniques.