Medicube PDRN Pink Collagen Bubble Serum (95 ml) is an innovative oxygen-bubble serum infused with PDRN (Salmon DNA) and Collagen Complex to deeply hydrate, repair, and revitalize tired skin.As the serum transforms into soft micro-bubbles, it helps enhance absorption, boost circulation, and deliver active ingredients deep into the skin � leaving it plump, smooth, and naturally glowing.