zuki,
Go look at the other mami's sharings on 濕疹bb媽咪論壇 la! They have a lot of experience with 濕疹 and will tell you what to do - eg. change milk, put on moisturising cream instead of using steroid cream, etc. etc. Very very helpful ga. I think your baby's milk may not be suitable for him cos his 濕疹 started so young (1 ot 2 months old only).