Is my baby allergic to something

Ashley

We gave her a bath and noticed these red bumps all over her body. The skin on her forehead/head is peeling like crazy. We use the dove baby body wash I haven’t noticed this problem before. And I’m not sure if it’s her detergent cause I haven’t noticed it with any of her other clothes. The only thing I can think of is her formula. I just started a new one yesterday. I was told to use enfamil ar because she has acid reflux. But if it’s cause of the formula I’m not sure what to do..