Exceptions when to use a / an + hair / hairs

[Mkumar75]

Exceptions when to use a / an + hair / hairs

Is there any exception when to use A or A with Hair or Hairs?

Please give explanations too.

thanks

Manu

[Mister Micawber]

.
I'm not precisely sure of your question, Manu. These are correct:

There is a hair in my soup. 'Hair' is countable and singular.
The poor man only has three hairs left on his head. 'Hair' is countable and plural.
He has very little hair left after his radiotherapy. 'Hair' is uncountable.

'An' is not used in any case.
.
_________________
Native English teacher at Mister Micawber's

[Tom]

[Mister Micawber]

.
You can say 'some hair'. 'Little' cannot be confused with 'short' here by a native speaker.
.
_________________
Native English teacher at Mister Micawber's

[Our Tort System]

Could you tell me which version (if any) is grammatically acceptable?

1. At the sight of the blood spattered wall, the hairs on the nape of his neck bristled.
2. At the sight of the blood spattered wall, the hair on the nape of his neck bristled.

Thanks in advance.
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What do I think of the pie?!
Goodness gracious, its delicious!
That's what I think of the pie!

[Mordant]

They're both fine. I tend to think "hair" is likelier in that context, though.

[Our Tort System]

[Haihao]

#1 gave me a vivider picture in a literary sense as if every single hair instead of the mass hair on the nape of his neck bristled.

[Beeesneees]

I'd also prefer 'hairs' in that context though I agree that both are acceptable. I guess we all have different experiences and preferences.
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Cheers m' dears!