Microneedling is the use of many tiny needles on a microneedle roller to stimulate the skin. In a very short time, microneedles can make more than 200,000 microscopic tubes, so that the active ingredients effectively penetrate into the skin, with wrinkle removal, whitening, repair, scar removal and other special products, so as to achieve the ideal effect of reducing wrinkles, treating scars and stretch marks, skin whitening, etc., and will not damage the integrity of the skin structure, and can gradually remove the toxins and waste in the deeper layers of the skin. After the microneedle beauty treatment, some candidates may have an itchy face, which is a normal reaction and may be related to the poor depth of the microneedle or inappropriate disinfection. In addition to itchy face, candidates may also experience redness, swelling, blistering, inflammation, infection, and even scarring. Therefore, in order to avoid the above adverse reactions, candidates can take the following measures: 1, the day after surgery can not be makeup, three days after surgery can be light makeup, do not use too strong stimulating cosmetics; 2, do a good job of sun protection, try not to go out when the ultraviolet ray is strong; 3, avoid touching the face with your hands to prevent infection; 4, micro-needling is an injection micro-plastic surgery, the doctor’s professional technical level has certain requirements. Be sure to go to a regular hospital for surgery.