Nothing unprofessional about beauty treatment (6)

I believe the answer is:

facial

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'beauty treatment' is the definition.
(I've seen this before)

'nothing unprofessional about' is the wordplay.
'nothing' becomes 'FA' (slang term - sweet Fanny Adams).
'unprofessional' becomes 'laic' (I can't justify this - if you can you should give a lot more credence to this answer).
'about' is a reversal indicator.
'laic' written backwards gives 'cial'.
'fa'+'cial'='FACIAL'

Can you help me to learn more?

(Other definitions for facial that I've seen before include "Type of beauty treatment" , "Beauty treatment for the visage" , "Beauty treatment, maybe mudpack" , "Cosmetic treatment" , "Beauty treatment for front of head" .)

I've seen this clue in The Independent.

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