Cleaning liquid's counterfeit and substandard, virtually (7)

I believe the answer is:

shampoo

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'cleaning liquid's counterfeit and substandard virtually' is the definition.
I can't judge whether this definition defines the answer.

'counterfeit and substandard virtually' is the wordplay.
'counterfeit' becomes 'sham' (sham is a kind of counterfeit).
'and' says to put letters next to each other.
'substandard' becomes 'poor' (I've seen this in another clue).
'virtually' means to remove the last letter (virtually all of the word, but not the last letter).
'poor' with its final letter taken away is 'poo'.
'sham'+'poo'='SHAMPOO'

Can you help me to learn more?

(Other definitions for shampoo that I've seen before include "hairdressing" , "16 21 [INDIAN IMPORT]" , "Hair-cleaning product" , "lather" , "treat shock?" .)

I've seen this clue in The Telegraph.

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