Injectables

It is botulinum toxin, a purified protein injected in small doses to relax specific facial muscles. That softens the lines those muscles create when you frown, raise your brows or smile.它是肉毒毒素，一种以小剂量注射的纯化蛋白，可放松特定的面部肌肉，从而淡化皱眉、抬眉或微笑时形成的动态纹。

The effect is temporary and typically lasts about three to four months, varying between individuals. It is avoided in pregnancy and breastfeeding, with certain neuromuscular conditions, with an infection at the injection site and where there is a known allergy, so a medical history is taken first.效果是暂时的，通常维持约三到四个月，因人而异。孕期与哺乳期、患有某些神经肌肉疾病、注射部位有感染或已知过敏者不宜使用，因此治疗前会先了解病史。