Aquaphor Baby Healing Ointment
A barrier ointment thin enough to use at every single change, which is what actually prevents rash. Also fixes cracked knuckles, dry cheeks and your own hands.

If you want to keep zinc, petroleum, preservatives and artificial fragrance off your baby's skin, this one is built around organic herbs like St. John's wort, plantain, chickweed, and calendula instead. It's also used in hospital NICUs, so it's trusted for very sensitive skin.
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Babies with sensitive skin or parents avoiding zinc and synthetic ingredients
it skips zinc entirely, so if you're used to a zinc-based paste for tougher rashes, this works differently
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