This is the very popular Yunth introductory serum. I have some extra from my subscription, so I'd like to sell it to anyone who loves Yunth or has been curious to try it. This is the price for one unopened box. Discounts are available for multiple purchases. Please refrain from purchasing if you are overly sensitive. Ingredients: Ascorbic acid (Please refer to the photos for the full ingredient list) Retail price: 3,960 yen