I am selling this item because I used it once and it didn't suit me. This serum contains retinol and niacinamide and is expected to improve skin firmness. - Brand: Anua - Product Name: 0.3+ - Ingredients: Retinol, Niacinamide - Volume: 50ml - Type: Serum The contents are almost full. Opened in early December. Please refrain from purchasing if you are concerned as it is a used item.