Numbuzin No.4 Ceramide AHA Glazed Skin Prep Serum Vial Set contains 10 single-use vials of 1.3ml each — the same formula as the full-size bottle. It uses 3% Glycolic Acid (AHA) and 3% Gluconolactone (PHA) to gently remove dead skin and smooth texture, while 5 types of Ceramides repair and protect the skin barrier. Niacinamide brightens, Panthenol soothes, and triple Hyaluronic Acid hydrates. Great for travel or trying before buying a full bottle. Buy online from koreanshopbd.com, COD available!