Intimate knowledge of face-lifts going wrong (5,2,4)

I believe the answer is:

facts of life

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'intimate knowledge of face-lifts going wrong' is the definition.
I can't tell whether this definition defines the answer.

'of face-lifts going wrong' is the wordplay.
'going wrong' indicates anagramming the letters.
'of'+'face'+'lifts'='offacelifts'
'offacelifts' is an anagram of 'FACTS OF LIFE'.

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(Other definitions for facts of life that I've seen before include "Essential knowledge for teenagers?" , "The birds and the bees" , "Realities" , "Information on procreation" .)

I've seen this clue in The Times.

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