Good point! I've tried a straight on Badger Bristle and that didn't work, but I suspect that's a tougher test. I got my daughter's hair brush and scavenged some hair from it to use. The problem is her hair is very long, blond, and quite fine. You'd laugh if you could see me trying the HHT when her hair is so light it just hovers over the blade and can barely be made to touch it, let alone get cut by it. Still.......................one day?