Progenix Professional skin care Hyaluronic Acid Day cream is perfect for winter months when you skin is dry and dehydrated. Instantly boost hydration to your skin by up to 88% while also helping diminish the appearance of sun spots, wrinkles, and fine lies. Improves dull skin to give your skin a youthful glow. Best to be used after a Progenix Serum (Vitamin C, Retinol, or Collagen).