Saline can be purchased directly from pharmacies or hospitals instead of configuring it on your own. Although saline can also be configured by yourself, due to the production of saline needs to be strictly blended to the proportion of 0.9%, and the need to do aseptic configuration, it is often difficult to blend to the proportion of 0.9% by yourself, and often contain some chemicals in the home salt, often can not be done aseptically prepared, and the major drugstores and hospitals have saline for sale, and therefore can be purchased directly. Saline has many functions, it can be taken directly by mouth in order to replenish water and electrolytes, and it can also be used as a disinfectant and cleansing agent to clean the location of broken skin. However, when using saline specifically, try to consult your doctor and do not use it on your own, especially not homemade saline.