It is sterile 0.9% sodium chloride dissolved in water for injection. The 0.9% concentration is isotonic, meaning it matches the salt level of body fluids.

Mainly to reconstitute freeze-dried products such as hyaluronidase, to dilute or mix injectable solutions, and for rinsing or irrigation. It is a solvent and carrier, not a treatment on its own.

As fifty 10 mL units per pack.

Because saline is isotonic, it dissolves and delivers products without the cell stress, stinging or damage that sterile water (which is hypotonic) could cause when injected.

No. Each unit should be treated as single-use; draw what you need and discard the remainder to keep preparation sterile and avoid cross-contamination.

That depends on the product’s own protocol — for example a hyaluronidase vial is commonly reconstituted with around 1.5 mL for filler correction. Always follow the target product’s instructions for the right concentration.

No. It is stored at room temperature. Inspect each unit and only use it if the solution is clear and the seal is intact.

On its own it is an inert physiological solution used for preparation and irrigation, not a therapeutic product. Its role is to safely carry or dilute other agents.