Look on ship for make-up item (8)
I believe the answer is:
eyeliner
'make-up item' is the definition.
(I've seen this before)
'look on ship' is the wordplay.
'look' becomes 'eye' (eyeing is a kind of looking).
'on' is a charade indicator (letters next to each other).
'ship' becomes 'liner' (liner is a kind of ship).
'eye'+'liner'='EYELINER'
'for' is the link.
(Other definitions for eyeliner that I've seen before include "Dark marks left by this" , "Make-up item" , "Item of 25dn" , "instrument for enhancing lamps" , "it draws attention to the viewer" .)