1st degree chemical burn

I know there are several threads on chemical burns, but none address my questions.

Yesterday I used Sally Hansen’s Brush on Hair Remover for Face. I followed the directions but when I removed the stuff, I felt a burning sensation on my chin. Rinsed it with cold water for a while, than applied a cold washcloth to it. It hurt so bad I took Advil and slept with the cold towel on my chin. It feels better now, but I’m not sure how to proceed. Can I wash the area with any kind of skin cleanser? Can I wear makeup over it or will that make it worse?

Help!