Help! Rusk 4.8 chocolate brown

[Pammy206]

Hi, need help! I put this through my own dark brownish hair and its turned it black!! I mixed it with a 10% developer.
Will i strip it? or will it fade to a lighter colour after a few washes??

would appreciate any help!:cry:

 

[Pammy206]

Oh also meant to say, its the rusk deepshine I used!