Moderate rashes get more red but do not include open sores or bleeding.
Severe rashes involve red skin that can become raw or cause sores and bleeding.
Mild diaper rashes typically clear up within two to three days (or less) with the following methods.

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Use breathable and loose-fitting diapers, and avoid plastic diaper covers.
Doing so allows for air circulation and prevents rubbing against the skin.
If you typically use cloth diapers, consider using disposable diapers until the rash heals.
Breathable Diapers
Breathable diaper fabrics have tiny pores that allow air movement.
Avoid Irritants
Certain dyes, fragrances, and chemicals can be irritants or allergens.
Products that may contain irritants include wipes, soaps, diapers, lotions, and laundry detergents.
attempt to use mild products that are free of alcohol, fragrance, and dye.
The brand is less important than the ingredients.
Diaper rash ointments typically include petrolatum.
They are best for everyday use, prevention, or mild rashes.
Diaper rash creams contain zinc oxide and are good for prevention.
Consult a healthcare provider before using hydrocortisone on babies.
Antibiotic Creams
Many people add OTC antibiotic creams or ointments to diaper rash cream.
While this could help with some rashes, consult a healthcare professional before trying an antibiotic cream.
Natural Creams or Balms
Many people make their own diaper rash creams or balms with natural ingredients.
Research shows this is an effective treatment for diaper rash and skin inflammation.
Bentonite Clay
Bentoniteclay (sodium bentonite) is a gray clay with a fine texture.
Its readily available at health food stores.
Mix it with distilled water for skin program alone or in a balm, soap, or shampoo.
One study shows that 88% of rashes started clearing after six hours of applying a bentonite cream.
Calendula
Calendulais an extract of marigold that has skin-healing properties.
Research shows that 54% of rashes started clearing after six hours of applying a calendula cream.
However, they note that Lotrimin (clotrimazole) was more effective in comparison.
Change the diaper frequently, at least every two to three hours.
Be sure to pat the skin dry rather than rubbing it.
These methods are gentler than a cloth or wipe.
Its also important to wash your hands before and after diaper changes to prevent the spread of germs.
If you use cloth diapers, wash them in hot water to prevent the growth of bacteria or fungi.
Moderate rashes may take two to three days.
If a rash lasts over three days despite treatment, consult with a healthcare provider.
Severe rashes can take a couple of weeks or longer to heal.
Timing depends on the underlying cause and the throw in of medical intervention.
Summary
Mild to moderate diaper rashes typically clear within three days of preventive methods and treatment.
Prevention and treatment include keeping the area clean and dry, using breathable diapers, and avoiding irritants.
There are various OTC diaper rash treatments for babies and adults.
Some are better for prevention, while others treat mild to moderate diaper rashes.
Fragrance-free products with zinc oxide or petroleum jelly are good choices.
Notify a healthcare provider if the rash persists or worsens after three days.
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