My skin isn't doing well, so I can't use this right now. I received a subscription delivery, but I have a lot left over, so I'm selling it. This is a set of 2 boxes. This is a beauty serum containing vitamin C derivatives for whitening, with 30 packets. - Brand: Yunth - Product Name: Pure VC Whitening Serum - Made in: Japan - Contents: 30 packets - How to use: Use with the included dropper - Features: Whitening effect - Ingredients: Vitamin C derivatives Thank you for looking.