Bother with false lashes (6)
I believe the answer is:
hassle
'bother' is the definition.
(I know that bother can be written as hassle)
'false lashes' is the wordplay.
'false' is an anagram indicator.
'lashes' with letters rearranged gives 'HASSLE'.
'with' is the link.
(Other definitions for hassle that I've seen before include "Nuisance, bother" , "Les has (anag) - a great deal of trouble" , "Bother, fuss" , "Modern word for bother and annoyance" , "Bug" .)