Skin testing is available in regular hospitals, medical plastic surgery and cosmetic organizations. Skin testing is the use of specific skin testing instruments or test strips and test solutions to see skin growth, aging, skin moisture content, pigment distribution, hair follicles, oil secretion, skin damage, and many other skin problems that are invisible to the naked eye. Skin testing can provide a better and more intuitive understanding of one’s own skin condition, making it more convenient to improve existing skin problems; when doing skin testing, it can also better diagnose various skin diseases, such as acne bacillus, pigmented tumors, and other abnormalities, which is of great significance in clarifying the cause of the disease and giving symptomatic treatment. If you want to do skin testing, it is recommended that you go to a regular medical institution to avoid going to places with incomplete qualifications, so as to avoid cross-infection caused by reasons such as inadequate cleaning, or delayed treatment of unknown etiology and other adverse consequences.