It artificially corrects my guise (8,7)

I believe the answer is:

cosmetic surgery

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'it artificially corrects my guise' is the definition.
The definition suggests a singular noun which matches the answer.

'it artificially corrects my guise' is the wordplay.
'corrects my guise' anagrams to 'COSMETIC SURGERY'.
Though, I'm unsure how this is indicated.

Can you help me to learn more?

(Another definition for cosmetic surgery that I've seen is " it could be nip and tuck!".)

I've seen this clue in The Times.

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