* Brand new, unopened * Includes a bonus pack This serum contains 10% azelaic acid and evens out skin tone. - Brand: COS DE BAHA - Product Name: AZ Azelaic Acid 10 Serum - Ingredients: Azelaic Acid 10% Purchased about 1.5 to 2 years ago, the box did not originally have a seal. However, it is unopened. Please refer to the third image to confirm that there are no peeling marks or damage near the opening, indicating that it is unopened. Although it is new and unopened, please understand that it has been stored by a private individual. Instant purchase is welcome ◎