Am I correct guessing the different meanings between..?
<She has brown hair> : Her hair is all brown
<She has brown hairs> : some of her hair is brown.
(or, is this ungrammatical sentence?)
Help me, please!!
Yes! 'She has brown hair.' (Her hair is all brown.)
Too ambiguous: 'She has brown hairs.' Women would not like this description, Hoho! You might say, 'She has a combination of auburn and black hair.' or 'She has blonde hair with streaks of gray.'