I am blonde and I died my hair with a cendre blonde ash colour and now I am grey in some parts of my hair I need to know how to fix it but I don't want to go a yellow kind of colour I like the ash I just need to get rid of the grey help!!

Get a clarifying shampoo, and mix it with about a tablespoon of baking soda and apply it like you normally would. Put a plastic cap over your head and use you blow dryer to heat it up... this opens the cuticle so it works better. Do this a few times and see if it helps and I can help you with the rest.