This is the most important of all the steps to prevent diaper rash.
There are a few basic precautions like:
Always clean the area from front to back, especially in girls to prevent urinary tract infections from the fecal bacteria near anal canal.
Never try to pull apart the foreskin in boys which is fused for the first two to three years.
It should be ensured that the creases and the folds are cleaned and that there is no hint of moisture left. Moisture is a breeding ground for infections.
Please use a sheet whenever you change the diaper in public places to prevent transmission of infections.
Air drying is better than pat drying. The latter is still preferred over rubbing or not drying at all.
DO NOT use wipes which contain alcohol or fragrance. The wipes should be used only when cleaning with water is not available. Minimize the use of wipes as much as possible.