The mechanism behind Vitamin C is precise: See Ascorbic Acid — multiple stable derivatives available. That specificity is what separates it from broader-category ingredients that work in less targeted ways.
The scientific name is See Ascorbic Acid / Derivatives. See Ascorbic Acid — multiple stable derivatives available. This mechanism is consistent across properly formulated products, which means the real variable is concentration and delivery system.
Typical working concentration is see specific forms. Best suited to all skin types skin. Primary applications: see ascorbic acid entry.
Works well with: Vitamin E, ferulic acid. Avoid combining with: None (derivative dependent).
L-ascorbic acid is most potent; SAP, MAP, AA2G are stable derivatives.