This is the latest renewed version! Although the price has increased due to the renewal, the ingredients have evolved from human adipose cell conditioned media extract to human umbilical cord mesenchymal stem cell conditioned media extract. Ships within 24 hours. [New & Unused] Ai Revo Ai Revo Human Umbilical Cord Mesenchymal Stem Cell Conditioned Media Extract Serum AI Serum Received in October and stored in a cool, dark place. Will be delivered with the film seal unopened. *Since we have already offered a significant discount, we cannot offer further price reductions. Thank you for your understanding.