Man maybe using lipsalve regularly (4)
I believe the answer is:
isle
'man maybe' is the definition.
(Isle of Man)
'lipsalve regularly' is the wordplay.
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
The alternate letters of 'lipsalve' are 'ISLE'.
'using' acts as a link.
(Other definitions for isle that I've seen before include "Lilliput, say" , "See 11 Across" , "Man conceivably" , "eg Man, Ely" , "'This scepter'd - - (Shakespeare)" .)