Showering in unfiltered Tap water. The chlorine is good for baby. We all think that we are protecting our kid from chlorine by using filters - but actually Unfiltered tap water is a miraculous drug for eczema. Not joking. Try it
Before you can cure it you need to know what's the cause of it. It could be a food allergy or could be inherited.
Diet control is one thing.
Coconut oil I swear by it!