How do you remove glue from a hat?

I have a blue denim flop hat that had a plastic flower glued on it. I took the flower off but there is some glue left. How can I get rid of the glue?

How do you remove glue from a hat?
It really depends upon the type of glue used. There are dozens of different glues that each have their own removal method. Though heat, water, and/or scraping work for most.
Reply:maybe like scrape it off a little or put something over top of it. Or you could paint it dark blue so it doesnt show...