If the economy permits, I'll tell you the best way, that is, bird's nest+milk, and eat it every day.
Besides sun protection and eating whitening food, it is also important to apply your face. All kinds of problems on the face can be improved by applying face, but please note that alcohol-containing masks or masks with deep cleaning function cannot be used every day.
Another thing to note is that as long as there is arbutin, you can't use it during the day! Although arbutin has whitening effect, it also has light absorption effect. If you use it during the day, it will easily make you very dark.
As for other types of masks, such as masks containing enzymes, masks containing emulsions and masks containing alcohol, it is not recommended that you use them twice a week.
If you want to whiten, you should also pay attention to your diet. Some foods are absolutely forbidden, including parsley and celery.
Carrots and papaya. Coriander and celery contain light-absorbing agents, and the skin tends to turn black in the sun after eating.
The principle of carrots and papaya is that they are red in nature, and they will turn red or yellow when eaten too much, which has been confirmed by medical data.
Eat more almonds, pearl powder, soybean milk and fresh milk.
Almonds, like vitamin C, must be drunk every day. Soak almond powder in milk or soybean milk.
The whitening effect of drinking it every day can also be seen quickly. I won't say the rest.