It could be a whole range of things.. My daughter and partner suffer from eczema. They’ve both had to cut out dairy (big no) and gluten. Also could be the products she is using to wash her hair and face? Washing? Would go for a natural alternative.. but please what ever you do.. stay away from steroids 😮💨 You can follow this chick on insta she has a whole range of helpful info! Hope this helps https://instagram.com/tiffanyerikacheung_nd?igshid=YmMyMTA2M2Y=
Use Vaseline lightly not too much , I did that with my son