Beauty is the eternal pursuit of female friends, with the development of the economy and the improvement of people’s living standards, people’s demand for skin beauty is also getting higher and higher. When people reach a certain age, due to the wind and sun, or poor maintenance and improper beauty, will cause uneven skin texture, pigmentation and wrinkles, these are the performance of skin aging. For these manifestations of skin aging, the common treatment or cosmetic methods are: 1.Drugs to remove spots: Commonly used are hydroquinone cream, azelaic acid, vitamin A acid and some traditional Chinese medicines, etc. These topical drugs have certain efficacy on some inflammatory pigmentation and chloasma, but usually need to be used for more than several months, with less than 50% efficiency, and poor efficacy on pigmentation and freckles. The main side effects of these drugs are local irritation, allergy, etc. 2.Chemical peeling: Weak acids such as trichloroacetic acid, lactic acid and fruit acid are often used on the skin to produce corrosive effects on the surface skin, i.e. chemical burns on the skin to remove the surface skin tissue and reveal the deep skin tissue. This method is commonly used in medicine to get rid of granulation tissue and redundant organisms. The normal skin has a certain tissue structure, and the normal structure and function of the skin is destroyed after the peeling procedure, and the body has to repair itself. If the corrosion is too deep during the peeling process, then the repair process will produce scarring, hyperpigmentation and hypopigmentation, and other side effects that will seriously affect the beauty; while the corrosion is too shallow to achieve the effect of removing the pigment, therefore, the majority of female friends must be careful with this method for beauty. 3, ultra-pulse CO2 laser and erbium laser: their principle is the same as chemical peeling, but the laser can control the depth of each peel, not easy to produce the side effects of peeling too deep, but the side effects of pigmentation and hypopigmentation can still occur, and the skin care after peeling is also very important, these need to be carried out under the guidance of dermatologists. The actual fact is that it has a broad spectrum (5600nm~l200nm), specific wavelengths of pulsed intense light energy can cross the epidermis and selectively act on the subcutaneous pigment or blood vessels to break down and absorb them. It also stimulates the skin to produce collagen tissue, making the skin elastic, full and lustrous, which can generally achieve the purpose of whitening and wrinkle removal after 4-6 treatments . The characteristics are Compared with the aforementioned methods, photorejuvenation technology is highly targeted, comprehensive, no significant damage to normal skin while eliminating skin aging performance, no side effects such as pigmentation and decreases, and no serious consequences such as disfigurement, and the treatment process is simple, and you can wash your face and makeup immediately after treatment without affecting your normal study and work, which is the most ideal and scientific beauty method at present. We would like to remind consumers not to be confused by the endless beauty terms, and to be cautious before doing beauty treatment, and to seek professional dermatologist consultation to avoid disfigurement due to beauty treatment. The most effective skin rejuvenation technology to date is the one that has no side effects. It is more suitable for photorejuvenation of facial diseases such as pigmentation, freckles, red blood, facial flushing, and skin aging disorders such as enlarged pores, fine wrinkles, elastic tissue degeneration (mild loosening). In addition, it is impossible to see immediate results with laser cosmetology because laser has mild damage to normal tissues, so the amount of laser irradiation for each treatment should not be too large to avoid excessive damage and blistering, and the correct method is to treat the laser energy by small and large times. After treatment, the damaged pigment is gradually absorbed, therefore, the use of laser treatment of skin diseases should not be rushed. Finally, it is a wise move to choose medical laser aesthetics in the dermatology department of medium and large hospitals.