A pink liquid bought at the pharmacy? (9)

I believe the answer is:

rosewater

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'bought at the pharmacy?' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.

'a pink liquid' is the wordplay.
'a pink' becomes 'rose' (colour).
'liquid' becomes 'water' (water is a kind of liquid).
'rose'+'water'='ROSEWATER'

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I've seen this clue in the Evening Standard.

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