Thank you for viewing! I purchased this from the official website, but I haven't had a chance to use it, so I'm selling it. This is a serum containing 15% niacinamide, which controls oil and minimizes the appearance of pores. It will be shipped via Takkyubin Compact. Due to its thickness, it will be a tight fit in the Takkyubin Compact box. I will use thin cushioning material, but will securely pad the surrounding area to secure the product. - Brand: COSRX - Product Name: The Niacinamide 15 - Ingredients: Acetyl Glucosamine + Zinc PCA - Volume: 20mL - Features: Controls oil, minimizes the appearance of pores - How to Use: Apply an appropriate amount, avoiding the eye area. - Precautions: For external use only. Do not get in eyes.