Product details of The Ordinary Hyaluronic Acid 2% + B5 30ml - The molecular size of HA determines its depth of delivery in the skin. This formulation combines low-, medium- and high-molecular weight HA, as well as a next-generation HA crosspolymer at a combined concentration of 2% for multi-depth hydration in a water-based formula. This system is supported with the addition of Vitamin B5 which also enhances surface hydration. - The molecular size of HA determines its depth of delivery in the skin. This formulation combines low-, medium- and high-molecular weight HA, as well as a next-generation HA crosspolymer at a combined concentration of 2% for multi-depth hydration in a water-based formula. This system is supported with the addition of Vitamin B5 which also enhances surface hydration. - Directions : Apply a few drops to face AM and PM before creams. If irritation occurs, cease use and consult a physician. Use only as directed on unbroken skin. Patch testing prior to use is advised. Keep out of reach of children. Moisturizing Serum Skin Brightening Serum Anti-Aging Serum, Anti-Acne Marks Seru