Mass nouns, countable vs. uncountable
countable and uncountable nouns
I just got my ..... done yesterday. The stylist cut and styled it for me. It looks great. This is a non-count noun.
I have to buy some allergy ..... because there is a lot of pollen in the air at this time of year. This is a count noun.
There was a lot of ..... at the Broadway show last week. People were very happy with the performance. This is a non-count noun.