Frozen foreheads barely raise eyebrows these days, but there was once a time when injecting a toxin produced by bacteria into one’s face would have been considered odd. The Botox trend didn’t gain traction until 2002, when it was approved to be used for cosmetic purposes. Botulinum toxin injections work by weakening or paralyzing certain muscles or by blocking certain nerves, reducing the appearance of wrinkles。
现在，整得僵硬麻木的额头只会引人侧目，但在以前，把细菌产生的毒素注入一个人的脸会被认为不可思议。2002年，肉毒杆菌被批准可用于美容用途，直到那时，肉毒杆菌的趋势才被越来越多的人接受。肉毒杆菌注射通过削弱或麻痹特定的肌肉或者阻塞特定神经来减少皱纹。