I have been colouring my hair with Clairol's nice'easy for years and it usually gives a good result. However, the last time I used it it didn't work! I couldn't believe it. The grey roots were still annoyingly there and it was just before I was due to jet off to Prague for a city break! I didn't have time to re-do it so I had to go as I was looking like a right slob! Anyway I'm back now and we still had a lovely time grey roots notwithstanding! I just wondered if this has happened to anyone else. I intend emailing Clairol to ask for an explanation.
What's going on , on the street outside your home right now?
. Not entirely sure what has happened there *grannyrebe17^. I was told, although it might not be accurate, a number of years ago by a semi-trained hairdresser that grey roots can become stubborn after years of dyeing. There is a product on the market that is meant to help with resistance but for the life of me I can't remember the name of it at the moment. Have a Google for products for dye resistance and meanwhile I'll search my memory bank if I can remember the code to get into it 
despite their claims! Dye oversaturation can also be problematic. what is the answer? ??
