Brightens and Improves Dark Spots. Acerola: The King of Vitamin C, contains 40% Acerola Water (400,000 ppm) ✔️Contains 8 times more Vitamin C than lemons and 127 times more than apples ✔️Even with high Vitamin C content, it's gentle enough for sensitive skin ✔️Highly concentrated serum with more Acerola extract than purified water 3 STEP Melanin Control System [Inhibition of Melanin Production, Penetration, and Movement] ✔️Potential Dark Spots → Control Melanin Production: Arbutin 2% (20,000 ppm) ✔️Emerging Dark Spots → Control Melanin Movement: Niacinamide 4% (40,000 ppm) ✔️Visible Dark Spots → Care for Existing Melanin: Acerola, Glutathione, Ferulic Acid Ceramide 5-Type Cream Drop for Skin Barrier Care ✔️Features proprietary MLV (Multi-Layer Vesicle) technology for multi-step skin barrier care ✔️8 types of hyaluronic acid and panthenol combined, delivering deep hydration and reinforcing the three-layer skin barrier   How to Use Apply evenly to face after cleansing and toning, then gently pat to absorb.   Net Wt 1.01 fl oz / 30 ml