Perform a patch test 48 hours prior to coloring.
Mix the colorant with the developer in the applicator bottle.
Apply to dry, unwashed hair, starting at the roots.
Leave on for 25–30 minutes (longer for resistant grays).
Rinse thoroughly with warm water until it runs clear.
Apply the after-color conditioner, leave for 2–5 minutes, then rinse.
Style as desired.