Botox has a long history of application in the beauty industry, and is commonly used for injections to remove wrinkles and slim the face, and is also considered a harmless form of beauty that is more acceptable to the majority of beauty seekers. However, the effect after Botox injection varies widely, and many people have stiff smiles after the injection, which has become an important concern. So the folklore is widespread, played Botox expression stiff, the face will not move, in short, all kinds of there is no, let the beauty industry ace product injustice. The actual fact is that you can find a lot of people who are not able to get a lot of money from the internet. The reason for the stiffness of expression after Botox injection is revealed 1, the normal reaction after the regular operation The muscles at the injection site will be weakened after the Botox slimming injection, and it is difficult to drive the muscles to do some expressions when doing expressions, which is what we call unnatural facial expressions. This situation is a normal injection reaction, generally the earliest will appear after 24 hours of injection, the peak effect is 7-14 days after injection, while 2-8 weeks later the expression will return as before. Apart from this reason, the stiffness of facial expression is closely related to the doctor’s technique. 2, the location of botulinum toxin playing deviation When injecting botulinum toxin, the doctor will design the injection point according to the facial wrinkle situation, the degree of bite muscle hypertrophy, etc. The design of the injection point location, the distance between the point and the point is definitely a test of the doctor’s anatomy, injection skills, etc. Any point of location deviation will cause abnormal stiffness of facial expressions, and the duration of this stiffness is more than 8 weeks. 3, botulinum toxin injection position is too shallow injection of thin face, such as doctors do not have a solid grasp of the anatomical level, it is easy to inject botulinum toxin into the upper layer of the muscle, it is likely to damage the facial nerve, causing abnormal stiffness of facial expression, common manifestations of drooling, mouth crooked to the side, the corners of the mouth involuntary twitching. 4, too much Botox injection In medical cosmetology, the safe dose of Botox is 100 units. If your injection amount is greater than this standard, then the duration of your abnormal stiffness of expression may last more than 8 weeks. 5, the interval between two injections is too short In order to ensure a better slimming effect, Botox can be treated several times, but each two treatments should not be less than 1 month, otherwise the effect is superimposed, it is easy to cause stiff expression. 6, after playing botulinum toxin massage injection site After the injection of botulinum toxin, the doctor will mostly advise you not to massage with your hands. The reason is that massage will make Botox diffuse into the adjacent muscles, thus intensifying the occurrence of unnatural expressions, and the return to normal expressions in this case will also be greater than 8 weeks. 1, Botox injection must be done in a regular hospital with an experienced doctor who can judge the size of your facial muscles and the right dose of Botox for you to ensure safety and avoid causing facial stiffness problems. This is the most important step, if you do not even believe in the regular hospital, want to risk to the microsoft studio, microblogging plastic surgeon, beauty room to gamble, then I do not stop you; 2, before injecting Botox, to ensure that the drug is approved by the State Drug Administration products, do not listen to who told you what customs someone, brought back from abroad, he is so powerful, how the state does not approve the regular drug to him; 3, the injection site of the skin Slight redness and swelling, generally a few hours after the subside, a few people will be injected after the site will have a slight bruising, but soon disappear; 4, 4 to 6 hours, it is best not to lie down, so as to avoid Botulinum toxin dispersion; 5, 6 hours, should not wash the face, do not apply makeup, do not be curious to touch the injection site, do not exercise; 6, after the injection to avoid eating hard shell food; a week of spicy, seafood food, avoid smoking and alcohol; 7, after the injection Do not massage the local area to avoid the spread of Botox; 8, one month after the injection is prohibited to do facial massage, hot compress, rubbing.