When washing your face, first clean your face with clear water. Then, take a spoon of cleansing salt, add water and mix it evenly. Use your fingertips to dip the saline solution and apply it from your forehead down to your chin. Gently massage with your fingertips for 30 seconds, then rinse thoroughly with warm water. Be sure not to let the salt stay on your face for too long to avoid irritating the skin. For people with oily skin, frequently using cleansing salt can achieve better results in tightening the skin and controlling oil. Giving your skin a bit of salt can make it tender and smooth. Foot bath salt and facial cleansing salt are both beneficial.