I. What are the characteristics of the MedLite C6 laser therapy system produced by HOYA ConBio in the United States? More than ten years ago, skin pigmentation diseases such as nevus of Ota, nevus of Ito, brown nevus of cheek and various tattoos were still “incurable” in dermatological cosmetic department. However, with the development of laser technology, various new Q-switched cosmetic lasers have sprung up and achieved near-perfect results in the treatment of some pigmented skin diseases. The MedLite C6 laser, the latest generation of Q-switched cosmetic lasers produced by HOYA ConBio, is the gold standard for the treatment of pigmented diseases in the world, effectively treating various pigmented diseases. The laser emitted by it penetrates the skin on the lesion extremely smoothly, enters the lesion and treats the pigment in the lesion. The dye is vaporized and crushed under the powerful laser during the treatment, causing the pigment to fade away. This fading is seen at the time of treatment. In addition, this laser is capable of laser skin rejuvenation, shrinking large pores, removing fine capillaries, effectively improving acne and acne scarring, improving seborrheic dermatitis, and effectively removing fine hair. Second, is the MedLite C6 laser treatment safe for pigmented diseases? What are the side effects? Pigment changes may appear in the short term and disappear after a few months. Small areas of treatment will only show slight local swelling. For large areas, especially around the eyes, swelling may be noticeable and will disappear on its own after three to five days.