Dear Disboard friends, just a word of warning concerning this from personal experience. A few years back the kids were trying on many different hats on our trip and they brought some little visitors back home with us in their hair. Yes, the dreaded "L" word. The DW and I were spared. We tracked back everything that could have been the source and the hats are the only things that the kids did that we did not. We even slept in the same beds as them on many nights. Let me tell you what... those were the hardest things to get RID of (pun intended). It turned out that hair dye finally did the job. I was never worried b/c I could just cut all my hair off and still look OK, but the DDs did not have that option.
Please learn from our experience and pull the try on hats from the back of the rack. It is still not fail safe, but your risks are very reduced. If you are going to buy one, ask for a CM to get one from the back.