Progenix Professional Skin Care Hyaluronic Acid Serum is a great addition to your skin care regiment if you suffer from dry or dull skin. Moisturizing serum will immediately provide deep hydration to give your skin a youthful glow. Packed with natural and organic ingredients and extracts, this serum can be applied to your face, neck and décolleté area. Follow it up with a Progenix Moisturizer. This serum can be used as day or night serum.