Surgical spirit is a solution of isopropyl alcohol, typically at a concentration of 70% in water.

It may also contain small amounts of other ingredients, such as:

* Glycerin: This helps to prevent the alcohol from drying out the skin.

* Denaturants: These are added to make the alcohol undrinkable. Common denaturants include methanol and acetone.

While the exact recipe can vary slightly depending on the manufacturer, the primary ingredient in surgical spirit is always isopropyl alcohol.