Tar protection to help produce a smoother complexion? (7)
I believe the answer is:
oilskin
'tar protection to help' is the definition.
I can't tell whether this definition defines the answer.
'a smoother complexion?' is the wordplay.
'a smoother' becomes 'oil' (eg something which smooths a machine's workings).
'complexion?' becomes 'skin' (I am not sure about this - if you are sure you should believe this answer much more).
'oil'+'skin'='OILSKIN'
'produce' is the link.
Can you help me to learn more?
(Other definitions for oilskin that I've seen before include "Raincoat" , "Heavy waterproofed cloth" , "Waterproof cloth for rain-gear" , "protective cloth" , "Heavy-duty waterproof" .)