I love all things coconut oil and say that it can heal anything cause it CAN! I get a jar or coconut oil from Aldi and it lasts me about 2 months. I used coconut oil after every diaper change in place of diaper rash cream.
Diapers didn't cause Oliver's diaper rash, but I wanted to make sure that we had a diaper that was super absorbant and natural on his butt. I love Bambo Nature diapers because they are very thin, yet they also have three layers of anti-allergen protection that keeps baby super dry. With a diaper rash, the biggest issue is keeping the rash as dry as possible.
I let Ollie run around naked 4 hours a day during the time he had the rash-no, not all at one time, I am not trying to get peed on. However, I would let him be naked for an hour at a time throughout the day. That time getting air dried made a huge difference. I could always see his butt looking better afterwards.
If you don't have access to coconut oil, vaseline or petroleum jelly is another great alternative to diaper rash cream.
Baking soda is pretty much the fix all for anything, and works in this case as well! Baking soda can be mixed in with the bath water to combat the acidity introduced by pee. You can also add 2 T of baking soda to water to make a paste. Apply the paste to baby's bottom, let it dry, and then put on the diaper. This can also be done with corn starch.
Most wipes have alcohol in them which isn't great for that raw bottom. As often as possible (obviously this won't work when out and for some poops), put baby in the sink to rinse off and pat dry with a towel rather than using wipes.
If you use all of these tips, you should see a diaper rash clear up in a few days. There is also the option of using diaper rash creams, but I prefer more natural methods for us. If you have a favorite diaper rash cream, I'd love to hear about it in the comments so I can give it a try!