Eye wash is suitable for use once every 3 days or so, and is not recommended for daily use. Eye wash contains a certain amount of antibiotic ingredients and antiseptic ingredients, which are harmful to the eyes. In addition, eye secretions themselves have a certain role in lubrication, sterilization and flushing of foreign bodies, so long-term use of eye wash will affect the protective effect of the tear film on the eye. Normally, the use of eye wash twice a week can relieve dry eyes and fatigue, and will not cause significant damage to the eyes, which is more conducive to eye recovery. However, eye wash cannot replenish tears and cannot remove makeup. Therefore, long-term and frequent use of eye wash is not recommended. In addition, eye wash can be used in emergency situations to flush and dilute harmful chemicals splashed into the eyes. In addition to eye wash, you can also choose sodium glassate or polyvinyl alcohol eye drops.