In the 1960s if you coloured you hair when re growth came through there was a dash to the Hairdressers to get your roots touched up.
Nowadays that does seem to happen. The lovely Ellie on Countryfile has this awful dark parting against her blonde locks
. Lots of other celebrities do the same.
Do you think they leave it on purpose ?
Eureka! I have discovered the cloak of invisibility!





. 
