This video explains the main functions and practical uses of the Watermelon Glow Brightening Serum in a clear, step-by-step format. You'll see how this multi-active serum combines watermelon extract, triple-acid exfoliation, and niacinamide to deliver brightening, pore refinement, and deep hydration. We demonstrate application techniques, ingredient synergy, and real-use insights for achieving luminous, glass-like skin.