COVERMARK Cell Advanced Serum WS (Serum) This is a sample set of 18 packets. [Quoted from the official website below] Immediate results you can feel. For unprecedentedly firm skin. A rich, milky serum that smoothly blends into dry skin. For smooth, supple, and hydrated skin filled with firmness and elasticity. Two Realizations That Will Change Your Skin Impression ● Unprecedented Firmness In addition to the proprietary technology※ ingredient "Cussonia Bark Extract," new skin-conditioning ingredients are included. ※In cosmetics ● Instant Change in Skin Texture When the serum is applied, it forms an "oil-rich layer" that adheres well to the skin.