Can expired saline solution that has been opened for more than 30 days be used for facial cleansing?

Sterile saline solution does not contain any additives, such as preservatives or germicides. Therefore, after being exposed to the environment, saline solution is no longer sterile.
 

The risk of contamination is increased further after the first 30 days. It is best not to use expired saline solution to clean wounds or your face, as it can cause further infection if there is acne or open skin.