The eyes have it (7)
I believe the answer is:
mascara
'the eyes have it' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for mascara that I've seen before include "Cosmetic for darkening the eyelashes" , "black application" , "that accentuates lashes" , "Eyelash cosmetic" , "could be found in handbag, perhaps" .)