Brylcreem amount
I believe the answer is:
dab
'brylcreem amount' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for dab that I've seen before include "Apply small amounts (usually a liquid) to a surface" , "Fingerprint - fish" , "A bad, backward fish" , "A small fish - bad one" , "Flounder" .)