I used only one drop from the 50ml bottle. The 30ml bottle is new and unopened. Please purchase only if you are okay with this! Here's an AI-generated description: A serum that can be expected to tighten acne scars and pores. - Brand: suiskin - Product Name: Green sprout pore tightening serum - Ingredients: Niacinamide 15% + CICA PDRN + Wheatgrass - Package Design: Green design - Country of Manufacture: Korea - Expiration Date: July 27, 2028 Thank you for viewing.