Houttuyniae is a plant described as an excellent herb in Donguibogam (the book of Korean medicine) and Bonchogangmok (the book of Chinese medicine), and its typical effects are anti-bacterial properties and sterilisation. Quercitrin, rich in Houttuyniae, expands capillaries and removes toxins from the skin, helping to ease skin problems and cleanse the skin. The rich moisturising power of natural-born glycerin from vegetable oils makes the skin moisturised. It is a neutral soap that keeps the acidic membrane of the skin, so it suppresses the reproduction of bacteria and germs. Fine bubbles touch the skin to nourish it.