The best way to treat a bad diaper rash is to wash the skin gently with warm water and soft cloth, rinse well and dry the skin completely, according to WebMD. It is important to keep the skin dry and free of contact with feces or urine, and change the diaper every time it is wet or soiled.
If a diaper rash persists, add 2 tablespoons of baking soda to a basin of warm water, and soak the rash for 10 minutes, several times a day, recommends WebMD. Do not use baby powder or corn starch on a diaper rash, as the powder can hold moisture, allowing bacteria to grow and cause infection.
Baby wipes containing alcohol or propylene glycol should not be used to clean a diaper rash because they may burn the skin or spread bacteria, warns WedMD. Do not use soap unless the area is very soiled, and keep the skin bare as much as possible to help the healing process.
Prevent diaper rash by using a cream such as A&D Ointment, Desitin, Diaparene or zinc oxide, notes WebMD. Avoid using the cream on broken skin because it can slow the healing process. Most diaper rashes are treatable at home, but medical attention is recommended if symptoms become more severe or signs of infection develop.