Hair oil (6)
I believe the answer is:
pomade
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">hair oil</span>' is the definition.<br/ ><span class="explanation-format__explanation">(pomade is a kind of hair oil)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for pomade that I've seen before include "Scented hair dressing" , "preparation for locks" , "Perfumed hair dressing" , "capital application" , "Hair lotion" .)