What is the method of administering瘦脸针 (injections for facial slimming)?

The injection method for facial slimming injections mainly includes the following steps: 1. Determination of injection sites: Based on the individual's specific condition, injection sites are identified and marked above the mandibular angle and below the line connecting the ear screen to the corner of the mouth. 2. Preparation and disinfection: Routinely disinfect the injection area using iodophor or 75% alcohol to ensure a sterile surgical field. 3. Injection procedure: Utilize a vertical injection technique, inserting the needle perpendicularly (needle tip facing downward) into the muscle layer at a right angle to the skin. The typical injection volume at each site is generally between 0.2 to 0.3 milliliters, adjustable according to the individual's masseter muscle hypertrophy and desired outcome. 4. Post-injection precautions: During the injection, aspiration is necessary to check for blood return; if blood return occurs, the injection should not proceed. Immediately after completing the injection, quickly withdraw the needle and apply gentle pressure with a sterile cotton swab for several seconds to absorb any oozing blood. It is important to note that this method has a time-limited effect and requires periodic reinjections to maintain the desired results.