Recently, there has been a big buzz about teenage injections on the internet, and many beauty seekers have come to the clinic to ask if they can get teenage injections, and I have always given a “no”. However, because of the large number of inquiries, I decided to write a serious science fiction about teenage injections. In 2009, the girl’s needle was first marketed in the European Union, and has since received registration or marketing approval in more than 60 countries or regions. This year, East China Medicine issued an announcement announcing that Sinclair, the company’s wholly-owned UK subsidiary, received the Medical Device Registration Certificate issued by the State Drug Administration, with the product name of Polycaprolactone Microsphere Facial Filler for Injection, which is expected to be officially marketed and sold in mainland China in the second half of 2021. Therefore, strictly speaking, the injection of teenage girls is not yet available in China, and the publicity of many businesses is mostly a gimmick, which belongs to the illegal category. The beauty seekers must be cautious when undergoing medical aesthetic treatment, not to be cheated by unscrupulous businesses under the name of teenage needle, injecting unqualified products. The main components of the teenage needle are PCL (polycaprolactone) and CMC (gel), which are used for subcutaneous implantation to correct moderate to severe nasolabial fold wrinkles.CMC will be gradually absorbed by the body after injection, while PCL will promote the growth of local collagen for injection, forming a lasting tissue scaffold to position the tissue support and elasticity of the injection site, with more lasting effects. However, since it is not yet available for sale, it is still not possible to apply teenage girls’ needles for medical aesthetic treatment, and from the perspective of medical research, the product risks and clinical effects cannot be concluded prematurely. At the same time, any injectable medical aesthetic products are subject to certain risks and require professional technical specifications of the operating doctor. The wrong level of injection, playing too much or too shallow, or not strict sterilization, may cause skin necrosis, infection and other injection-related complications, which are common in past medical disputes. In addition, similar to the problems encountered in the medical beauty market Thermage, some of the medical beauty institutions selected teenage girls needles are actually qualified products, a lot of fishy, non-professionals are difficult to research and judge, which requires additional vigilance of patients, can not be easily fooled, brainwashed.