What is this 😩


My son is 18 months. This rash has been here for about a month I have never seen it this bad till today! He woke up and it was spread all over his face. For the last month it’s seems to clear up a little with just a dry spot left then other days it’s very red and rashes idk why! Iv tried baby lotions for sensitive skin, Eczema lotion. Nothin is really helping, It doesn’t seem to bother him but it really bothers me.