Crossword Genius

They save up for small hairdressing tool (8)

Ross

I believe the answer is:

scrimper

I'm a little stuck... Click here to teach me more about this clue!

'up for small hairdressing tool' is the definition.
I don't know anything about this answer so I cannot tell whether this works.

'they save' is the wordplay.
I cannot really understand how this works, but
'save' could be 'scrimp' (scrimping is a kind of saving) and 'scrimp' is present in the answer.
The remaining letters 'er' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.
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