Can you advise me ? I have been having tint and bleached highlights at the hairdresser for many years but would like to start home colour (all over ). My hair is currently light brown/blonde with a little grey on my parting. Would I be making a big mistake and if not could you recommend a product ? I would like to be a dark ash blonde . Thanks

Why not slowly change the color by having your hairdresser put lowlights in your hair which are dark ash blonde? As your hair grows out, she could add more and more until you become all over dark ash blone.