Fractional laser after care needs local cold compress, pay attention to local protection, strengthen moisturizing repair, strict sunscreen and so on. 1. Local cold compress: after the operation, there is a burning sensation in the treatment area, when the face is red, you can choose the ice pack local cold compress, which can moderately reduce the swelling and pain. 2. Pay attention to local protection: you can’t wash your face within one week after fractional laser, so as to avoid infection; don’t rub the wound scabs, let the scabs fall off automatically; avoid eating spicy and greasy stimulating food; avoid strenuous exercise and sweating. 3. Strengthen moisturizing and repair: after fractional laser, you need to strengthen moisturizing and repair to promote wound healing. 4. Strict sunscreen: after surgery, you need to strictly physical sunscreen such as wearing a hat and playing umbrellas, etc., avoid exposure to the sun, to avoid pigmentation caused by direct sunlight, affecting aesthetics.