Tara,
When our daughter (who has ARCI, which used to be called LI/CIE and now are kind of lumped together) was little, I put Aquaphor on her twice a day and Cetaphil lotion every time I changed her diaper. That was overkill, but her skin was so dry I thought that was what she needed! Now that she is 2, I Aquaphor her twice a day, give her a bath at night, and put Cetaphil on her once mid-morning and once after nap in the afternoon.
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4 year old daughter with CIE