Poly-L-lactic acid(PLLA)is a synthetic,biocompatible and biodegradable polymer.As a biostimulatory agent,PLLA could be safely degraded the same pathway as lactic acid.The cosmetic application of injectable PLLA has for more than ten years in the western country,and its considerable safety and satisfaction in patients have been identified by many researchers and clinical practitioners.So far,there is a rising number of studies to explore the clinical indication and treatment strategy of PLLA.Through summarizing PLLA-related studies and case reports,this article aims to review the current PLLA applied for cosmetics.
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