This is a serum for wrinkle improvement and lifting. The product costs 7990 yen per bottle, but I purchased a set of two. One bottle is unused. I used about 1/4 pearl-sized amount from the other bottle for testing. I have discarded the box, so I will wrap it in bubble wrap. Purchased on 2025.10.25, stored at home. Thank you. Includes one free Max Pack (sheet mask), please feel free to use it. - Brand: TIME BACK - Product Name: Premium Lift Set - Contents: 15ml - How to Use: Use after applying lotion and emulsion - Purpose: Wrinkle improvement, lifting