We put micro-plastic surgery into the category of cosmetic surgery.
South Korea does not include micro-plastic surgery in the category of cosmetic surgery, but it includes micro-plastic surgery in the category of beauty.
Therefore, micro-plastic surgery does not need to wait until adulthood, such as cutting double eyelids, whitening needles, sticking needles at the root of the nose, etc., and it does not need to wait until the age of 20. Because these risks are relatively small.
But if you need surgery, such as bone cutting and face changing, you will have to wait until you are 20 years old.