RHA®4 for Midface Volume Deficiency

"RHA® 4 is a sterile, biodegradable, biocompatible, viscoelastic, clear, colorless, homogenized gel implant. It consists of cross-linked hyaluronic acid produced by fermentation of Streptococcus equi bacteria, formulated to a concentration of 23 mg/mL and 0.3% w/w lidocaine in a physiologic buffer.~Up to 3.0 mL injected per cheek (subcutaneous and/or supraperiosteal layer). Touch-up treatment provided at 4 weeks (up to 3.0 mL per cheek)."

"Comparator product is sterile, biodegradable, colorless gel of hyaluronic acid generated by Streptococcus species of bacteria, chemically crosslinked with BDDE.~Up to 3.0 mL injected per cheek (subcutaneous and/or supraperiosteal layer). Touch-up treatment provided at 4 weeks (up to 3.0 mL per cheek)."