You can take some vitamin C. If you want to be quick, take some vitamin C effervescent tablets.

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Supplement:

Vitamin C can be applied directly, but at night.

Because things coated with vitamin C are exposed to the sun, the painted place will become dark. If you take it orally, there is no such problem.

It's not that you can't eat for a long time, but that you can't overdo it. If you eat a lot of fruits every day, especially kiwi fruit and lemon, you don't need to supplement vitamin C. If you seldom eat fruit, you can eat 1-2 capsules a day. In fact, vitamin C is easily oxidized and won't stay in your body for long. Don't worry.