In this era of pursuing perfection in everything, many people want to have flawless skin, but natural beauty belongs to only a few people after all, and most people in life will inevitably have some “black spots” on their skin – moles. But if a mole grows on the face, it will become a “heart disease” for many beauty girls. But don’t worry, as a common medical beauty need, there are many clinical programs that can help remove moles on the skin, including laser mole spotting. I believe that we have seen a lot of publicity in our lives, whether on TV commercials or bus stop billboards, and we have even been “eager to try” for a long time. But don’t be impulsive! First of all, let’s have a deeper understanding of what laser mole spotting means. First of all, the principle of laser mole removal is that the laser produces a highly intense beam of light, and different types of lasers can produce different colors of light. The flesh color of the laser is the key to treatment. Different colors of laser are absorbed by different colors of skin, and the laser energy is used to disintegrate and vaporize the dye particles, close the blood vessels, and then the body absorbs the dye particles to eliminate them from the body, and the pigment then fades away, thus achieving the purpose of expelling moles. CO₂ laser And although they are both moles, they are very different from each other! Because they are different, the lasers used for treatment are also different. At present, there are many lasers used in clinical practice, and the common ones are CO₂ laser, Yttrium neodymium garnet doped laser, emerald laser, ruby laser, pulsed dye laser and so on. Among them, CO₂ laser is one of the most widely used lasers in dermatology, and its working medium is CO₂ gas, which is a gas laser with a wavelength of 10600nm and is invisible light in the far infrared. According to the output mode, it can be divided into continuous CO₂ laser, pulsed CO₂ laser and super pulsed CO₂ laser. Among these three types of laser treatment, the last one is the super-pulsed CO₂ laser, which can be called the master of mole removal. First of all, it is equipped with three modes to meet the clinical needs of cutting, excision and coagulation, and the highly precise laser beam ensures precise treatment and no scarring after surgery. Secondly, the incision is fine, and the vaporization depth of the laser on the tissue is only 001(mm). The procedure has the advantages of no bleeding, short time, no pain, fast healing, no charring and few complications. The clinical indications of dermatology mainly include pigmented nevus seborrheic keratosis, hair epithelioma, sweat duct tumor, facial xanthoma, freckles, etc. After talking about gas lasers, let’s talk about solid state lasers. Solid laser includes yttrium-doped neodymium garnet laser and ruby laser, etc. The former has a wavelength of 1064nm, which is near infrared light and can be better absorbed by melanin, and is the most penetrating laser among pigment laser devices; the latter has a wavelength of 694nm, which is a red laser and has a higher absorption rate by melanin. The last is liquid laser, mainly pulsed dye laser, which is commonly used in pulses of 510nm dye laser, which is green visible light mainly absorbed by melanin or tattoo particles, and is used to treat body surface pigment diseases such as freckles, pigmentation and nevus of Ota and tattoos. At present, for shallow moles, you can use ruby laser or dye laser to get rid of them; if they are larger and deeper moles, you should use CO₂ super pulse laser to get rid of them. After the mole is spotted, the black spot will disappear immediately, usually there will be slight redness and scabbing, and the scab will fall off in a week or so, the spotted area is tender red, and the trace will be basically invisible after paying attention to maintenance. Although laser mole spotting has many advantages and the effect is obvious, the quality of different medical institutions varies, so you must be cautious and careful. Try to choose a regular hospital or medical beauty institution, and be sure to listen to the doctor’s advice, and then choose accordingly according to your own wishes. Do not trust some unregulated beauty institutions, one step carefully may fall into the “consumer trap”, and even cause damage to their own skin, which is really more than worth the loss. References [1] Fang Hongyuan, Xing Weibin, Zhang Bingxin, Xu Haihuan. Handbook of practical skin venereal diseases [M]. Beijing:People’s Health Publishing House.2016.20 [2]Zeng Y,Dong JY,Wang Wool,Yan M,Fu XJ,Ma G,Ma C,Zhang Z,Yao M,Lin XXi. Advances in laser treatment of nevus of Ota[J]. Chinese Journal of Laser Medicine,2018,27(03):178-182. [3]He Jianling,Ruan Bin,Lai Seiyu. Nursing experience of ultra-pulsed carbon dioxide laser removal of facial pigmented nevi [J]. China Medical Beauty,2019,9(12):128-131. [4]Du Doudou. Mole removal, what exactly should be chosen? [J]. Medical aesthetics and beauty,2019(Z6):53-57.