Polish dermatologist's second-stage acne treatment (8)

I believe the answer is:

elegance

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'polish' is the definition.
(thesaurus)

'dermatologist's second-stage acne treatment' is the wordplay.
'dermatologist's second' becomes 'e' (I am not sure about this - if you are sure you should believe this answer much more).
'stage' becomes 'leg' ('leg' can be a synonym of 'stage').
'treatment' is an anagram indicator.
'acne' anagrammed gives 'ance'.
'e'+'leg'+'ance'='ELEGANCE'

Can you help me to learn more?

(Other definitions for elegance that I've seen before include "Refinement, polish" , "Grace and stylishness" , "Fine quality" , "Fashionable grace" , "Sophistication" .)

I've seen this clue in The Guardian.

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