Go without food, seeing value initially in look (6)
I believe the answer is:
starve
'go without food' is the definition.
(I've seen this before)
'value initially in look' is the wordplay.
'initially' suggests taking the first letters.
'in' indicates putting letters inside.
'look' becomes 'stare' (stare is a kind of look**).
The first letter of 'value' is 'v'.
'v' going within 'stare' is 'STARVE'.
'seeing' acts as a link.
(Other definitions for starve that I've seen before include "Become famished" , "Stop feeding" , "Averts (anag)" , "Vaster (anag)" , "Suffer extreme hunger" .)