Injected volumes
At initial treatment, the mean volume of the PCL-based dermal filler that was injected into the NLFs was 17.4% less than the mean volume of the NASHA-based dermal filler. Furthermore, for both groups, 59.5% of the patients received a touch-up to full correction. For these patients, the mean volume of the PCL-based dermal filler that was injected into the NLFs for touch-up was 13% less than the mean volume of the NASHA based dermal filler.