Okay, I don't live in a country where it's easy to get hat stiffener. I've heard mixed reviews for hair spray, but I need *something*, as this hat I'm bashing -- a lovely Dobbs 15 -- has felt approximately the thickness and consistency of paper. I've removed the liner -- I always do -- and I'm wondering whether spraying the *interior* with hair spray would stiffen it up, without hurting the felt? It's a very light taupe, so I don't want it to discolor -- I figure if I don't spray so much that it soaks through, I should be fine, no?