I went to a new hairdresser and had my grey roots dyed. The permanent colour hasn't covered all the grey. There are a few strands of grey left and I've paid quite a lot of money.
The hairdresser has said this because I have quite a lot of grey and I would need to use a different type of dye in future for full coverage. I had a lot more grey before my during my post lockdown appointment and this didn't happen.
Surely this can't be right? I think perhaps the dye wasn't left on long enough. Can any hairdressers advise? Thanks