Hello, I find that Juvederm effectively softens deep nasolabial folds and marionette lines. However, if one injects too much filler in an attempt to completely erase these furrows, the filler tends to spread out and make the surrounding areas look "puffy". In my practice, I prefer to avoid this appearance, and instead I advise my patients the furrows will not completely be eliminated. Although facial filler injections are relatively quick and low risk compared to surgery, it is still very important to seek an experienced healthcare professional to do your procedure. They should be able to tell you the longevity of the filler, risks, and how they would manage possible problems should they arise (infection, allergy, skin lumps, blockage of a blood vessel, etc). These problems are very uncommon but if they occur, need to be managed appropriately. I hope your procedure goes well.