Blisters after laser treatment may leave scars if the dermal layer of the skin is damaged, and scarring can be prevented by applying ice, medication, and enhanced care. 1. Ice: blisters after laser treatment are related to the thermal effect of photoelectricity, timely ice can help reduce local swelling and prevent blisters from expanding. However, it is necessary to pay attention to the ice compress to move gently, to avoid the blister to break, so as to avoid local infection, thus increasing the possibility of scarring. 2. Medication: For patients with relatively serious blisters after laser treatment, you can apply epidermal growth factor gel and other ointments to help skin tissue healing; in addition, you can also apply anti-inflammatory ointment (such as erythromycin ointment, mupirocin ointment, etc.) to help prevent infection and promote recovery. 3. Strengthen care: In the above treatment process, patients should pay attention to strengthen local care, which can help better recovery and achieve better therapeutic effect, such as: blister skin such as breakage, within a week to avoid water, in order to prevent the occurrence of infection. After the wound scab, pay attention to let it fall off by itself, strict sun protection; light diet, good work and rest. It should be noted that the above drugs need to be used under the guidance of a specialist to avoid adverse reactions.