so, I bought some hair dye at a local store
mix the dye,
I used a mixing bowl to mix the hair dye
pour the dye in, and then add the juice
stir untill the powder disolves
then cover the bowl with plastic wrap,
for about one hour to set the dye
then wash your hair, don't condition it
tousle dry with a tower, so its a bit damp
now apply the dye
then wrap your head with a plastic bag or plastic wrap
wait 20 min up to two hours
the longer the better, makes its stronger in colour.
now rinse the henna out and towel dry