As part of the treatment for severe diaper rash, parents can add 2 tablespoons of Arm & Hammer baking soda to a warm bath and soak the affected area for 10 minutes, three times a day, notes WebMD. Leaving the diaper off can help dry out the rash.
If a baby has diaper rash, parents should avoid using wipes. Instead, they should use a bulb syringe to wash off the diaper area and blot the baby dry, explains Ask Dr. Sears. Before putting a diaper back on, a parent can generously apply diaper cream, such as zinc oxide, lanolin ointment or Triple Paste. Although not appropriate for long term use, applying hydrocortisone cream to the rash twice daily for several days helps decrease inflammation.