Why Does Diaper Rash Happen So Easily? Why is it an irritant to wear a diaper on your baby? This is because in areas where there is contact, they get very moist due to the water, friction, urination, and defecation. Contact with the moisture in the baby will most likely result in skin irritation in the baby. However, with the proper use of the baby diaper rash cream, your baby will surely be protected against the irritants caused by the moisture. It is very vital for you to u