A 1mm deep wound will not leave a scar if the medication is changed on time, but avoid eating spicy and stimulating food during the recovery period to avoid scarring. For 1mm wound, the wound is relatively shallow, the external damage only hurt the epidermis and not hurt the dermis, so the recovery process is relatively smooth, in the case of strict medication care generally will not leave a scar. However, during the recovery period, you should avoid spicy and stimulating food, seafood and fungus food, because these foods are easy to rupture the newborn capillaries and lead to bleeding and infection, so that the inflammation of the wound is not easy to subside, and it is easy to lead to pus and infection, which on the one hand slows down the recovery of the wound, and on the other hand, it may also leave a scar in the later stage. Therefore, although the 1mm wound is not deep, you should do a good job of changing the medicine and nursing care, and if there is discomfort, you should go to the hospital in time to avoid disease progression.