I'm in the process of going from red back to blonde and this is my third lightning treatment. I've got it down light enough so now it's time for a toner. I have Wella colour charm (ash blonde) T14 which is best to neutralise orange hair, and T18 which is best to neutralise yellow tones.
I can't decide which one will be best to use based on my current hair shade- can anyone help? I will combine it with a T 50 additive at 20 developer and leave for ~ 20 mins.