Hyaluronic acid: 1, to solve a variety of wrinkles: first, excessive depression of the frown lines, if Botox injection alone often can not get satisfactory results, combined with the use of hyaluronic acid injection, the effect is better; second, the lines generated by the beak, although dynamic lines, but the use of hyaluronic acid to fill the depression of the lines, but also has good results; third, the elimination of the decree lines, is the hyaluronic acid wrinkle removal Depending on the depth and location of the wrinkles, the injection sites include the outer nasal hollows, the wrinkles themselves and the lower part of the outer lips; fourth, the dry lines around the lips caused by long-term dehydration, including the corners of the mouth, can be removed with hyaluronic acid. 2, facial shaping: the first role in rhinoplasty, although the development of rhinoplasty technology has reached a certain height, but since hyaluronic acid injection for rhinoplasty, because of its fast forming, no need for incision, painless and other advantages received a wide range of popularity; secondly, it can also be used for jaw augmentation, hyaluronic acid can not only quickly shape the chin, but also solve the problem of chin recession. 3, facial filler: skin aging will cause changes in the distribution of subcutaneous tissue will cause some facial depression, hyaluronic acid has good effect on temporal, cheeks, orbits, eyebrow arch, lip perimeter, tear trough, decree lines, marionette lines, etc. 4, lip augmentation: human lips will atrophy with age, wrinkles and sagging of the corners of the mouth, the use of hyaluronic acid lip augmentation, get rid of lip wrinkles around the lips is a good choice. Collagen: 1. Get rid of deeper wrinkles on the face and neck: collagen has a good effect on deeper wrinkles. Collagen injections can effectively improve nasolabial folds, crow’s feet, frown lines and other wrinkles around the eyes, but it is important to note that the doctor needs to use different collagen products for injection according to different areas. 2.Lip augmentation: In most cases, the volume, position and texture of people’s lips and mouths can be improved by filling with collagen. 3, fill scar: collagen injection fill scar should be shallow depressed scar, about 1 to 2 mm deep and 2 to 4 mm wide, people with a history of keloid should use collagen injection with caution. Theoretically, the collagen injected into the body will participate in the formation of new scar, so the effect of collagen on the correction of scar is temporary, and multiple injections are needed to obtain satisfactory correction effect. 4, repair damage: collagen can be used to repair the defects caused by skin damage (acne scars) and repair the defects of facial shape. Maintenance time: Hyaluronic acid In general, hyaluronic acid with relatively large molecules is absorbed a little slower than hyaluronic acid with smaller molecules, but one injection can maintain the effect for 6 to 12 months ranging from 6 to 12 months, and can be maintained up to 19 months if supplementary injections are given. Of course, the absorption rate of the human body is also very much related to the location, for example, the lips are absorbed very fast and the effect will be lost in half a year, while the nasolabial folds, perioral wrinkles and depression filling can be maintained for 9 to 12 months with a single injection. Collagen Depending on the type of collagen product, some products require only a full amount of injection to achieve the desired effect, while others require an over-injection of 100% to 150% or 150% to 200%. In general, the effect can be maintained for an average of 6 to 12 months with one injection, and even 12 to 18 months or more with high strength collagen. Supplemental injections are usually given after 6 months of injection to effectively extend the retention time in the body. The overall duration of the effect will vary depending on the technique of injection, the depth of implantation, the implantation site, as well as the age and lifestyle of the patient. Tip: What is CFDA? CFDA generally refers to the State Food and Drug Administration, which is an agency directly under the State Council. The CFDA is the responsibility of the Food Safety Office, the Food and Drug Administration, the General Administration of Quality Supervision, Inspection and Quarantine of the production of food safety supervision and management, the General Administration of Industry and Commerce of the circulation of food safety supervision and management of the integration of the formation, responsible for drugs, medical devices, cosmetics and consumer food safety. The CFDA is responsible for the supervision and management of food safety in the pharmaceutical, medical device, cosmetic and consumer sectors.