SAT-SAP (INCI: Sodium Ascorbyl Phosphate, CAS 66170-10-3) is a stable and water-soluble derivative of Vitamin C (Ascorbic Acid). Known for its superior stability in aqueous formulations with a pH greater than 7, it offers excellent bioavailability while maintaining the powerful benefits of Vitamin C. SAT-SAP is widely used in skincare formulations at concentrations ranging from 0.01% to 3%, making it a versatile ingredient for various cosmetic applications.