Botulinum toxin type A, named BOTOX in English, is very commonly used in neurology, ophthalmology, plastic and cosmetic surgery because of its nerve blocking effects. The current dose of cosmetic surgery injections is only one percent of its maximum safe dose, so it is very safe. The face slimming injection is not a shot after the whole face are thin, it only acts on the innervated muscles of the site, the other parts are not effective. To make the injection to achieve the desired effect, you need to implement the precise injection according to the distribution characteristics of muscle hypertrophy. 7-15 days after the injection face began to gradually thin, in 6-10 months after the injection, you can add 1-2 injections according to the situation, the effect of thinning the face will be better, can last 1-2 years want to delay the speed of recovery of the bite muscle, we must eat less hard, tough food, appropriate to avoid frequent chewing movements, such as chewing gum, high melon seeds. Face slimming injection points: Do not look at the process of injecting a thin face is very short, but the injection operation is actually delicate. Because the bite muscle is a triangular muscle, the main part of the triangle is around the bottom of the jaw angle, the top of the triangle in the lower edge of the zygomatic arch, if the injection point is too high may lead to depression in the area under the zygomatic arch; injection point is too far forward, the injection level is too shallow may paralyze the laughing muscle, resulting in the inability to smile or smile when the cheeks are skewed. What are the contraindications of Botulinum toxin face slimming? 1, botulinum toxin is not teratogenic, but it is best not to use during pregnancy and lactation; 2, neuromuscular diseases such as myasthenia gravis and multiple sclerosis cannot be used; 3, patients who use aminoglycoside antibiotics cannot be used. Aminoglycosides include streptomycin, gentamicin, caramycin, butamycin, tobramycin, etc.; 4, very thin patients can not be used, because the muscle is too thin after injection is easy to diffuse to the surrounding muscles, prone to side effects; 5, patients allergic to albumin or to botulinum toxin and allergic patients can not be used; 6, patients with serious heart, liver, kidney, lung disease and patients with connective tissue disease Cannot be used.