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 water3 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 AcidCeramide 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 UseApply evenly to face after cleansing and toning, then gently pat to absorb.   Net Wt 1.01 fl oz / 30 ml