Set produced by some lounge lizard (3)
I believe the answer is:
gel
'set' is the definition.
(I've seen this before)
'produced by some lounge lizard' is the wordplay.
'produced by' indicates a hidden word (the clue produces a copy of the answer).
'GEL' is hidden in the letters of 'some lounge lizard'.
(Other definitions for gel that I've seen before include "Hair styling substance" , "Leg (anag.)" , "Begin to work" , "Hair treatment" , "Upstage" .)