The law does not stipulate how old you can have plastic surgery. Generally, it will be fine after 1 year. If it's a little skin injury, it won't leave a scar. If you are afraid of leaving scars, you can also fade them. For more serious wounds, such as those that need stitches, they will definitely leave scars. Generally, there is no wound, or the wound is shallow, there will be no scar, and the child's skin has strong recovery ability, so don't worry too much!