I always use a lot of Desitin (zinc oxide) all over my diaper area. Back, sides and front. I haven't had a rash in decades although after one of these sessions I sometimes have a slight
Do you ever need to tell them? Most people I know just let it happen. Course most people I know don't have a mommy or daddy. Still, I think it's better to go unsaid. It's more fun and more of their responsibility to worry about than ours.