Crossword Genius

Utterly fool sealer with make-up (9)

Ross

I believe the answer is:

concealer

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

'make-up' is the definition.
(I know that concealer is a type of make-up)

'utterly fool sealer' is the wordplay.
I cannot quite understand how this works, but
'fool' could be 'con' (I've seen this in another clue) and 'con' is located in the answer.
This may be the basis of clue (or it may be nonsense).

'with' is the link.

Can you help me to learn more?

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