hair or hairs

[moniza]

My mum's washing her hair/hairs.
I think that hair is uncountable noun.
So I can say that My mum's washing her hair.(not hairs)
Am I correct?
Thank you teachers, in advance.

[Anglika]

My mum's washing her hair/hairs.
I think that hair is uncountable noun.
So I can should say that My mum's washing her hair.(not hairs)
Am I correct? Yes, when referring to the growth of hair on the head.
Thank you teachers, in advance.

..

[engee30]

yup , Hair is the correct word there ...thers nuffin like "hairs" .

Oh yes, there is something like hairs:

While eating Christmas pudding, Mark found two long black hairs in it. He suspected that they were his sister's, and had gotten in there accidentally.