Objective To investigate the efficacy of poly (L-lactic acid) application in the rejuvenation of hands, and to analyzethe safety of its application. Methods two subjects with aging problems of the hands were given subcutaneous injections of poly-L-lactic
唇部作为面部的一个重要美学单位，在面部特征中发挥着重要影响。基于唇部美学考虑，年轻的唇部状态应是莹润饱满，唇红缘线条流畅、清晰，唇体对称且无皱纹，口角微上翘[1]。而随年龄增长及外部因素的影响，唇部会逐渐呈现老化的表现，如因容量流失所致的唇红变薄、唇红缘模糊、上唇人中延长、口角下垂及口周皱纹增加等[2]。唇部年轻化治疗的目标是实现唇红容量恢复、唇纹填充、口角提升以及口周皮肤年轻化[3]。