I'm wondering about this, I have tried to link the articale by Hannah Pool in Grazia but can't find it online.
It was an article on casual racism in the UK and she cited an incident where she had been in the womens toilets and a white women had said how beautiful and exotic her hair was and asked if she could touch it (whilkst reaching out and touching it), Hannah Pool said no you can't and teh women said she was rude.
I lived in Japan for years and had blonde hair back then. Lots of people saidhow exotic my hair was and people liked to touch it sometimes, it didn't bother me at all. My daughter is mixed race and has gorgeous very thick black hair and I love touching it as it is so different to my own.