Colour correction this morning please help

[danni1984]

Hi geeks I'm doing blondi Rae this morning on black hair I done a test piece and really could have done with it being another shade lighter just wanted to know if anyone knows if you can put blondi rae under heat? I'm doing this lady at 10:30 so hope someone could reply before then!! Xx

 

[snaz]

Never used under heat, so can't comment.
But you can apply it upto 3 times.
I would advise that you ensure you rinse has stated, has this is the key part.