In general, you can prevent contact dermatitis by avoiding exposure to irritating chemicals, plants, jewelry and other substances that trigger irritant or allergic contact dermatitis.
To help prevent diaper dermatitis:
Change baby diapers frequently
Clean the soiled area with warm water and a soft cloth
Avoid using store-bought wipes and cleansers on your child's skin. These products can trigger skin reactions.
Apply a protective coat of zinc oxide ointment