The sleeps on both sides..I use Aveeno wash I think it may be the water because I've changed and eliminated everything and he keeps getting when he does I bathe him in oatmeal and it heels him

My son has eczema and his rash gets like that too! I use lotion and try to keep it as dry as possible, he gets it under his chin and down his belly and on his cheeks.

Yea check the lotions n soaps. Get him Aveeno

Does he sleep on that side of his face? Might be your detergent. Try unscented and dye free detergent. Also soap. My lo does this when she lays on my shirt.