I am desperately in need of grey coverage and can't get to the hairdresser's for a few weeks due to life but have a few events before my next appointment which I really don't want to look grey at. I have blond highlights but most of my hair is now grey with a bit of my original light brown underneath mainly at the back. I have developed a sensitivity to hair dye ( thanks menopause) so both permanent and semi permanent hair dyes are out. I have those root powders but tbh this is a bit past what they can do! Is there anything out there I can use to get me over the next few weeks? I can see John Frieda do a defy grey which looks good but it's only for brown hair. There doesn't seem to be a blonde equivalent. Just for men? I am at a loss. Any suggestions gratefully received. I draw the line at growing old gracefully though...not me!