Photorejuvenation does not need to be done continuously, generally need to be based on the state of the skin, skin rejuvenation effect and other reasonable choice of the number of times and frequency of photorejuvenation. Photorejuvenation is also used as a daily maintenance program in clinical practice. Standardized treatment and scientific care can slow down the aging process of the face and improve the appearance of fine lines, pigmentation, uneven color and other undesirable appearances that occur with age, and is widely used in medical cosmetology. Photorejuvenation does not need to be done continuously, under the guidance of professional physicians, according to the treatment effect to determine the number of treatments and frequency can be. Generally 3-5 times / course of treatment, each treatment interval 1-2 months. If you have already achieved the purpose of removing spots, you can not continue the treatment. If you feel that the effect of improving the skin’s dullness and fine lines is obvious, you can be evaluated by a specialist physician after a few months to determine whether or not to continue the treatment. After photorejuvenation treatment, the skin may have burning sensation, redness and swelling and other adverse reactions, generally can be relieved by themselves, usually to strengthen the skin moisturizing, strict sunscreen, to avoid hyperpigmentation. The use of various chemical peeling treatments, such as fruit acid and salicylic acid resurfacing, is prohibited in the short term after treatment.