Hair dye (5)
'hair dye' is the definition.
(henna is a kind of hair dye)
This is all the clue.
(Other definitions for henna that I've seen before include "Dye used in skin decoration" , "Stainer" , "hair colour?" , "shock treatment" , "Reddish-brown hair-dye" .)
'hair dye' is the definition.
(rinse is a kind of hair dye)
This is the entire clue.
(Other definitions for rinse that I've seen before include "Wash - siren (anag)" , "Wash lightly without soap" , "Remove soap with clean water" , "Cleanse in water" , "Hair preparation" .)