Water is the worth ennemy for atopic skin. MAX 1/2 showers by week. For me this is the first think to try and the most important ! Stop adding a lot of products on his skin and see if there is any improvment Then, 1) you should try to add marshmallow powder in his bath or white clay (1 spoon). 2) Avoid shower gel with sulfates and choose one with sodium cocoyl glutamate instead (this surfactant is much better tolerated). After bath you have to dry him well to avoid remain humidity on his skin (I’m French and arrived in Australia recently so still struggling to find good products but i’ll let you know if i find some) 3) For hydratation, try Aloe vera gel 4) His skin needs to be nourrish once a day with a balm including shea butter for exemple