Saline solution

Saline solution is a mixture of salt and sterile water, typically containing about 0.9% salt, which closely matches the salt levels in your body. It is commonly used in medical settings for cleaning wounds, rinsing nasal passages, or administering intravenous fluids to keep people hydrated. Because its salt concentration is similar to that of body fluids, saline is gentle and unlikely to cause irritation. It essentially acts as a safe, sterile liquid that supports hydration, cleansing, and drug delivery without causing harm.