Using a barrier ointment after every diaper change can help protect your baby's irritated skin. 
Keep your baby clean and dry by changing his or her diaper frequently. That may mean getting your baby up at night for a diaper change.
Rinse your baby’s diaper area well at each diaper change. Some parents keep cotton balls and a squirt bottle or an insulated container of warm water at the changing table for easy, gentle cleanups. Pat your baby's skin dry — don't rub!
Using a barrier ointment — one that forms a protective layer on the skin — after every diaper change can help protect your baby's irritated skin from stool and urine.
Put your baby's diaper on loosely or use a diaper that's a little big to allow for better air circulation. If your baby wears cloth diapers, don't use plastic pants. If you buy disposables, try a different brand to see if that helps.
When the weather is warm and your baby can play outside or in a room with an easy-clean floor, leave the diaper (and ointment) off for as long as possible every day. Exposure to the air will speed healing.
Consider letting your baby sleep with a bare butt whenever he has a rash. A plastic sheet under the cloth sheet will help protect the mattress.
