Hairdresser has had the nerve to go away on lovely holiday
, but left 'instructions' for me to touch up roots.
I have no idea what they mean, and if I did no idea where to buy the stuff. I was hoping the instructions would say "Clairol Bla, bla put on and leave for 5 minutes, £5.99 in Boots 
She has left the following instructions "I used 8.0 with 20vol but if you think it needs to be a bit darker use 7.0 with 20vol. Hope that helps you..good luck I'm sure you'll colour it lovely"
Help needed -Aggggghh!