Easter egg dip (3)
I believe the answer is:
dye
'easter egg dip' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for dye that I've seen before include "Pigment" , "Colouring liquid" , "Colouring; sounds like fade" , "Colouring material" , "Hair colouring" .)