Consider changing from cows milk to plant milks if you're feeding that to him.
I have but ever since its been popping up I stopped.... and yet these bumps won't go away @missnic
If you wash his face with warm water and soft wash cloth everyday it'll help clear it up
do you put lotion on his face? my daughter looked liked this and as soon as I quit putting it on her face it cleared up
He was very fussy while nursing and had so much gas afterwards to the point it seemed painful to pass.
try switching his bath soap to aveeno or cetaphil