Medicube PDRN Pink One Day Serum Set is a powerful serum formulated with 99% high-purity Salmon PDRN. It comes with a narrow, thin nozzle for easy, fresh application, delivering intense hydration and skin brightening effects. Key Benefits High-Purity Salmon PDRN: 99% Salmon PDRN that adheres smoothly to skin for a fresh application. Brightening Effect: Dermatologically tested to brighten dull and dark skin in just two weeks. Boosted Hydration & Glow: Increases moisture by 58.7% and glow by 38.8%. Improved Skin Density: 0.484 increase in skin density for firmer skin. Powerful Hydration: Contains seven types of Hyaluronic Acid and Carbomer for deep moisture. Sensitive Skin Friendly: Hypoallergenic formula tested for sensitive skin. How to Use Twist the cap to open the serum and apply to your face after toning. Use within the day for best results.