N.D.
I have two buoys (3 & 4) with exzema, we do have a few major flare ups a year, but for all the small ones and the in between times this is what we were told to do by their derm...
Bath them nightly, I have always heard other wise, but as someone else said, all that lotion builds up.
We also use Aveeno oatmeal baths for kids.
Cetaphil everything! The wash and the cream, and I mean CREAM, not the lotion in the tubes but the cream in the jar.
I have tried all the OC stuff and nothing worked on my kids, I had to use the Rx from the derm for major outbreaks, but find that the daily ritual above seems to keep the outbreaks from starting in the first place. Some seasonal changes cause them , but I can not control that :)
Keep nails VERY short, once they start scratching and break the skin then you have to deal with another ray of problems, like infection. And also everything that is healing itches more, so an already itchy rash mixed in with a healing sore is a miserable combination.
Watch also what kind of soap you use on the laundry. I can onlu use FREE everything on all the laundry, if I try to wipe a face with a towel that was washed in bleach I have rashy kids! And most paper towels cause outbreaks and so do baby wipes on the face. This is just stuff that I have learned in the last 4 years, but both my boys are different about how, why and when they rash, but the basics I have talked about seems to work for them both on a daily basis. Good luck