Medicube Collagen Glow Booster Serum contains 260 Dalton of deep absorption Collagen and offers a consistent volume glow to the skin. Filling density system to the inner skin of only one shot with the PDRN Milk Protein and Hybrid Peptide Glucose. This serum is formulated with triple-density care ingredients, including Collagen, Elastin, and Proteoglycan, to help enhance loose skin by offering elasticity and moisture. Hypoallergenic tested for the sensitive skin.