Sodium chloride needs to be washed off after applying to the face, if the concentration of 0.9% sodium chloride, i.e. saline, has a sterilizing and bactericidal effect after washing. Washing the face at the same time can be a good way to remove the oil, pimples, dust and dirt collected in the skin of the face, thus achieving the effect of deep cleaning of the skin. If a person’s face has inflammation, such as redness, swelling, heat and pain, it is best not to use sodium chloride to stimulate, you can use a topical anti-inflammatory drug, spot application of Listerine also called Fusidic acid. The best water to wash your face is warm water. Sodium chloride is a chemical substance and it is best not to use it on your face. But the 0.9% concentration of sodium chloride on the face, the concentration and the body’s osmotic pressure, should be possible.