Chemical exfoliant to treat the appearance of whiteheads. We all have them, more or less: although we know them as whiteheads, they are actually called sebaceous filaments, and they are small, whitish bumps that are usually located on the nose and forehead, although they can appear all over the face. How do we differentiate them from blackheads? When we extract sebaceous filaments, they come out as a white thread, since they are simply an accumulation of sebum. Cosrx has designed this chemical exfoliant based on AHA acids (alpha hydroxy acids) that helps eliminate them, as well as prevent their appearance, by deeply cleansing the pores to regulate excess sebum. The star ingredient is apple juice extract, a powerful acid that removes dead skin cells and evens out skin tone. This wonderful formula also includes glycolic acid, which smooths the skins texture, making it more uniform and even-toned. After cleansing your face, soak a cotton pad and apply a small amount of product evenly to your skin, avoiding the eye and mouth areas. If using during the day, apply sunscreen with SPF 30 or higher.