This serum combines BIO-PDN and caffeine to tighten and revitalize the skin. Purchase date: November 2025 Purchased from the official Qoo10 store. I use this product frequently, but I bought a lot due to a festival, so I'd like to share it. I will take it out of the box, wrap it in bubble wrap, and include the box. - Brand: IOPE - Volume: 30ml - Main Ingredients: BIO-PDN 38.08% / Caffeine 20,000ppm - How to use: Use at the end of your morning and evening skincare routine - Country of manufacture: Korea Bundling is welcome. Thank you for looking.