I only used one drop. Torriden CELLMAZING Vita C Brightening Ampoule 30ml ⋆――――――――――――――――――⋆ Thank you for viewing. 【Please Note】 ・To reduce shipping costs, the packaging size may be adjusted to be smaller for shipping. (e.g., folding the box, simple packaging) Please be aware of this beforehand. ・Although it is a new, unused item, please purchase only if you understand that it has been stored at home. ⭐︎I also have other cosmetics for sale. Discounts on shipping are available for combined purchases. Please feel free to comment before purchasing.