Vitamin C Suspension 23% in HA Spheres uses direct vitamin C and hyaluronic acid to help visibly reduce signs of aging by brightening and balancing uneven skin tone. This water-free formula provides 23% pure L-Ascorbic Acid which remains completely stable due to the absence of water. What s more, this water-free formula is supported with spheres of hyaluronic acid for added hydration. Note: The slightly granular texture of this product is due to the vitamin C powder being suspended in an oil-like base and therefore each application requires a few seconds to feel absorbed by the skin. If desired, this formula can be diluted in a cream base per application to allow the skin to build tolerance over time.