Made with stabilized Vitamin C derivative "Ethyl Ascorbic Acid" that has 86% pure Vitamin C content. That is much higher than 40-50% content present in other Vitamin C derivatives. At a pH ~ 4.0 it is highly stable and effective Made in Centella water to soothe & hydrate skin. Also contains 1% Acetyl Glucosamine (AG), an amino-monosaccharide (simple sugar) and a precursor of hyaluronic acid, that provides skin moisturization, boosts natural Hyaluronic Acid synthesis, and regulates natural exfoliation What comes out depends on what goes in. Formulated with high grade COS-VCE (Ethyl Ascorbic Acid) by CosMol Korea, a leading global supplier