We address the question of hair tangles and show experimentally that curly hair tends to become less tangled than straight hair. A statistical model based on geometry confirms our findings. The model gives an interesting geometric approach to hair behavior.As a curly haired type I always assumed the opposite (although I can't say I've owned a comb for a long long time), but that's what you get when you actually go look. Go figure.
(from AIP's physics news update - no link yet, but should be number 838)