1. Do not sunbathe excessively, sunbathe or spa for one month before treatment.

2. You can't do laser, dermabrasion and fruit acid skin change within one week before treatment.

3. If there are people who are sensitive to light, have skin lesions, abnormal immune system or are pregnant and taking special drugs, they need to consult a doctor first.

4. People with multiple inflamed and suppurative wounds are not suitable.