Test Article was given at start and two week follow up if necessary, up to a maximum dose of 2 cc to achieve optimal correction as determined by investigator.

Control Article was given at start and two week follow up if necessary, up to a maximum dose of 2 cc to achieve optimal correction as determined by investigator.

Dermal filler

To determine if the mean change in the 5-point Wrinkle Severity Rating Scale (WSRS) score at 6 months was non-inferior to the contralateral Control Restylane treated side, where on this 5-point scale 1 has no measurable nasolabial fold, 2 has some fold, 3 has moderate fold, 4 has heavier moderate fold, and a 5 has deep to a very deep nasolabial fold. For this study only moderate nasolabial folds were included (i.e., 3 or 4), where subjects scored as 5 were excluded.

Split-face double blind study design used so each subject received each treatment followed by a two week touch up treatment, where no subject received more than 2cc of either CosmetaLife or Restylane treatment.

To determine if the mean change in the 5-point Wrinkle Severity Rating Scale (WSRS) score at 6 months was non-inferior to the contralateral Control Restylane treated side, where on this 5-point scale 1 has no measurable nasolabial fold, 2 has some fold, 3 has moderate fold, 4 has heavier moderate fold, and a 5 has deep to a very deep nasolabial fold. For this study only moderate nasolabial folds were included (i.e., 3 or 4), where subjects scored as 5 were excluded.

Analysis was intention to treat (ITT) and each subject received both CosmetaLife and Control (Restylane) injections into contralateral nasolabial folds, respectively. WSRS units (change from baseline analyzed)