What is the trick with the corn starch? I've never heard of that. I just have a little travel spray bottle I put a dab of conditioner in & filled the rest with water for small tangles.
That pic of Max totally describes Princess. It's like the brush hypnotizes her, when she wont chill out especially I'll show it to her & she runs to my lap & melts like butter!

Of course if I try this on the bathroom counter everything is different! lol.