Camouflage the skin (4)
I believe the answer is:
hide
I believe this is a double definition.
'camouflage' is the first definition.
(I've seen this in another clue)
'skin' is the second definition.
(I know that skin can be written as hide)
'the' is the link.
(Other definitions for hide that I've seen before include "mask" , "Conceal, veil" , "Place to observe wildlife" , "Flog" , "Fell" .)