Results published in today's online issue of the Journal of American Academy of Dermatology showed that treatment with Sculptra®aesthetic (injectable poly-L-lactic acid) was significantly more effective than a human-derived collagen treatment CosmoPlast® in correcting shallow to deep nasolabial fold (NLF) wrinkles (smile lines). In addition, this study demonstrated that the effect in correcting the NLF wrinkles with Sculptra®aesthetic can last for up to 25 months.