What it is for?
To wash the raw wound / blistering area, or you can even use it to bathe if there is any condition causing extensive skin loss.
Why using a saline solution?
It is isotonic. That means it will not draw water in or out of your raw wound hence there will be less pain.
It cleans and wound and reduces the risk of secondary bacterial infection.
How to prepare it?
Simply add 9g of salt to a litre of water. Viola!
If you have just a small wound, buy those bottled sterile saline bottle that are readily available in most pharmacies. Yes, those that are used to wash contact lenses one will do.