At present, Botulinum toxin type A is widely used in minimally invasive treatment in aesthetic plastic surgery, mainly exerting two aspects of cosmetic effects. On the one hand, it acts on the masticatory muscle (mainly the bite muscle) to achieve a slimming effect, and on the other hand, it acts on the facial expression muscle to improve the removal of power wrinkles. Face slimming injection: Botulinum toxin – masticatory muscle The common injection site is the bite muscle, by making the bite muscle atrophy, to achieve the purpose of improving the shape of the lower part of the face. The principle is to use Botulinum toxin type A to block the neuromuscular conduction, so that the simple hypertrophy of the bite muscle relaxation, paralysis, and finally atrophy to achieve the purpose of face slimming. Usually the effect starts in 3-4 days, and the best effect appears about 4-6 weeks after injection, and the drug effect is usually maintained for about 6 months. Injections for wrinkle reduction: Botulinum toxin – expression muscle The facial expression muscle is different from the skeletal muscle, the shape and function are relatively independent, most of them are connected with the skin and superficial fascial soft tissue with fibers, so as to express the facial expression in a fine way. Due to the long time reciprocal mechanical movement of facial expression muscles, wrinkles are produced on the skin (kinetic wrinkles), especially some habitual expression movements, excessive use of a certain piece or group of expression muscles, which keep them in a hyperactive state for a long time and gradually form permanent wrinkles over time. The application of botulinum toxin injected into certain expression muscles that produce wrinkles will block the release of the neurotransmitter acetylcholine, thus decreasing muscle tone or temporarily paralyzing local muscles, and wrinkles (especially power wrinkles) can gradually improve and disappear. Injections are a safe and effective non-surgical way to remove wrinkles, using a micro-injector to inject a small amount of botulinum toxin into the muscles that produce wrinkles in several points accurately, blocking the release of the neurotransmitter acetylcholine, so that muscle tone decreases, activity is weakened, and the local muscles are temporarily paralyzed and paralyzed. Head-lift lines), inter-brow lines (Kawasaki lines), crow’s feet, fine lines under the eyes, nasal dorsal lines (rabbit lines), chin and neck wrinkles effective, especially for early power wrinkles, the skin is not too loose. The drug maintenance time is about 4-6 months. Safety: Botulinum toxin is not metabolized by the liver and only acts on local muscles, which rarely causes serious adverse reactions in the body. However, we need to remind the majority of beauty seekers that botulinum toxin injection is not a simple life cosmetic project, but a medical project. It has strict professional requirements for drug configuration, drug dosage, injection location, injection depth and angle, and professional doctors must be familiar with relevant anatomical knowledge and the distribution of facial nerves and muscles, and must undergo a certain amount of time training before they can engage in cosmetic injection operations. Complications and side effects after Botox injection: 1. headache, local rash, edema and cold-like symptoms after injection; 2. severe allergic reactions such as urticaria, soft tissue edema, respiratory distress, anaphylaxis are extremely rare, but once they occur, timely life support is necessary (choose a regular hospital to be safe and secure); 3. asymmetry due to inaccurate injection dose; bleeding or hematoma due to needle puncture of blood vessels, local bruising; 4. 4.After the injection of interbrow line and elevation line, ptosis, incomplete eyelid closure, unnatural bilateral eyebrow shape, flying eyebrow, and asymmetry of eyebrow height on both sides may occur; 5.Injections at the crow’s feet may cause diplopia and incomplete eye closure; 6.Injections of botulinum toxin in the middle of the face, some patients cannot make some expressions (especially micro expressions) after injection, and have mask-like feelings; (for the nasolabial folds in the middle of the face) (For the sunken nasolabial folds in the middle of the face, soft tissue filler is a better choice, Botox injection must be carried out by experienced doctors, and the dose must be small) 7, Botox injection in the lower part of the face, a few patients have unnatural or asymmetrical smile, salivation 8, Botox injection in the early stage of the bite muscle can have chewing weakness, soreness phenomenon, open wide mouth weakness, etc., especially for the first injection of patients is more obvious; because of chewing habits, after injection Because of chewing habits, there may be mild asymmetry on both sides after injection; skin sagging or local depression in the subzygomatic area, because the speed of muscle atrophy is faster than the speed of surface skin compliance change or drug diffusion to the surrounding area, which is generally mild, and the above problems tend to improve gradually after 2 months of injection. 9. 7-10 days after the initial treatment, a review should be conducted, at which time the treatment effect and complications begin to appear. A small number of patients may require additional injections. Other effects of Botox 1. Facial asymmetric smile Congenital or acquired reasons cause bilateral asymmetry when patients smile or laugh. The cause arises due to diminished or hyperactive upper and lower lip phase. Injecting a small dose of Botox into the muscle bulge on the side with high muscle tone can improve the asymmetrical smile with an effect time of 4-6 months. 2, calf shaping Like the principle of face slimming, botulinum toxin injection can also target the phenomenon of thick calves caused by developed calf muscles to achieve a shaping effect. During the treatment, the medial or lateral head of the gastrocnemius muscle, located at the back of the calf, is selectively injected so that the muscle strength can be eliminated and the circumference of the calf can be made smaller. But the dose of botulinum toxin needed is large, usually needing about 300 units, the injection must be careful, choose a professional institution. 3, the treatment of excessive underarm sweating Botox can treat hyperhidrosis. Botox is injected under both sides of the armpits to inhibit the secretion of sweat glands in the armpits. Generally speaking, the effect of each injection can be maintained for about 6 months. Precautions related to Botox 1. Stop using aspirin and aspirin-like drugs 14 days before injection; 2. Stop using cosmetics on the day of injection, and do not wash your face or put on makeup for 6 hours after injection; makeup can be resumed 1 day after injection; 3. Observe for 20-30 minutes after injection and leave the hospital after confirming no discomfort; 4. Maintain a vertical position for 2-4 hours after injection and avoid lying down; 5. On the day of injection Do not massage the local area to prevent Botox from spreading to the surrounding area. 6.Avoid eating hard food after injection; for a week, avoid eating spicy and stimulating food, smoking and alcohol 7.Avoid strenuous exercise 1-2 days after injection. 8, 10-14 days after injection, it is best to come to the hospital for follow-up. Unsuitable people 1, allergic to the components of the injectable products or allergies are prohibited (for example, eggs and other proteins); 2, pregnant women, within 6 months of preparing for pregnancy and lactation is prohibited; 3, under 18 years of age should not be injected; 4, the simultaneous use of aminoglycoside antibiotics should not be injected; 5, myasthenia gravis, multiple sclerosis and other immune diseases or those suffering from organic diseases should not be injected.