1. Method 1: Raw soybeans and aged vinegar (or rice vinegar, instead of white vinegar, it will be counterproductive) are sealed in a container and urged to eat more than a dozen soybeans once a month, which will take effect in three or four months.

2. Method 2: First, put the aged vinegar or rice vinegar into the pot, add a little soy sauce, soybean salad oil and white sugar, and cook for two minutes, then add raw soybeans (raw soybeans should be soaked in water for 8- 12 hours in advance), cook together, put them into the pot for 4-6 hours, and eat them as side dishes every day. This is valid for half a year.

Relatively speaking, the effect of eating raw soybeans will be better, but it is a bit unpalatable, and it will be poisoned without salt. The second method is more delicious and not toxic, and the long-term consumption effect is also good. To remove spots, you must protect yourself from the sun.