Perfume fixative (9)
I believe the answer is:
ambergris
'perfume fixative' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ambergris that I've seen before include "Wax-like substance" , "substance floating in sea" , "Perfume ingredient from whales" , "Sperm whale secretion used in perfume manufacture" , "part of whale" .)