The Ordinary Vitamin C Suspension 23% + HA Spheres 2% is a powerful skincare treatment that combines pure L-Ascorbic Acid with hyaluronic acid in a water-free, silicone-free formula. This stable suspension helps brighten skin tone, reduce signs of aging, and provide hydration through its unique spherical HA delivery system. This product features a water-free formula that maintains the stability of the 23% pure L-Ascorbic Acid (Vitamin C). The suspension has a slightly granular texture due to the vitamin C powder being suspended in an oil-like base. Users may experience a mild tingling sensation upon application, which is normal. The product can be diluted with a cream if needed to build skin tolerance. It should not be used simultaneously with Niacinamide, EUK 134, Direct Acids, Peptides, or Retinoids. A patch test is recommended before first use. Apply a small amount in the AM or PM after cleansing.