Ascorbic Acid, commonly known as Vitamin C, is a water-soluble vitamin and essential nutrient with powerful antioxidant properties. This white to light yellow crystalline powder occurs naturally in citrus fruits and vegetables. As a strong reducing agent, it plays critical roles in collagen synthesis, iron absorption, and immune function. Commercially produced through the Reichstein process or fermentation, pharmaceutical-grade ascorbic acid meets strict purity standards for food, dietary supplement, cosmetic, and pharmaceutical applications.