Acetyl Citrull Amido Arginine is a synthetic compound that is an analog of a natural dipeptide produced by a red alga in the Arctic region. It is used in cosmetics and personal care products for its skin protective properties, particularly for its ability to provide anti-stress benefits to the skin. This compound is known to stimulate exchanges and nutritious incomes, offering energizing and protective effects during extreme conditions such as cold, dryness, and pollution. It is also recognized for its good skin compatibility and absorption, contributing to anti-aging and skin nourishment effects. Acetyl Citrull Amido Arginine is a valuable ingredient in skincare for its potential to enhance skin health and resilience against environmental stressors.