This serum is packed with essential ingredients for mature skin, including the popular 2021 ingredient "retinoid" and the noteworthy ingredient "functional peptide." It contains:. Human stem cell culture fluid with exosomes. Firming peptides (Argireline, Matrixyl, Syn-Ake). Retinol palmitate (vitamin A derivative). Vitamin C3 (pure vitamin C, water-soluble vitamin C, oil-soluble vitamin C derivative). Moisturizing ingredients (two types of ceramides and 10 types of plant extracts). This serum contains 10% human stem cell culture fluid (liposomes), rich in over 100 growth factors, including exosomes, EGF, FGF, and IFG, which enhance skin's firmness and radiance. It also contains a luxurious blend of highly functional peptides, including Argireline (c), Syn-Ake (c), Matrixyl (c), retinol palmitate (vitamin A derivative), vitamin C3 (pure vitamin C, water-soluble vitamin C, oil-soluble vitamin C derivative), fullerene, and moisturizing ingredients, all of which are beneficial for mature skin. . Tightens sagging skin around the cheeks and eyes, and fine lines. Improves skin texture for firmer skin. Makes makeup go on much better the next day. Leaves skin with a translucent appearance. Strengthens the skin's barrier function for less roughness