Medicube Collagen Glow Booster Serum is a luxurious milky serum infused with niacinamide, hydrolyzed collagen, and milk protein to deeply hydrate, plump, and brighten skin for a radiant "cushiony" glow. Its innovative airless twist-push packaging ensures precise dosing and freshness, while the gentle, clean formula (pH 5.4-7.4) is free from gluten, silicones, parabens, and alcohol—perfect for on-the-go rejuvenation.