Just after some advice please. Before lockdown I had my hair dyed every 8 weeks or so a dark blond to cover greys .. obviously with lockdown not been able to go to a hairdresser so I had to use a semi permanent light brown to cover the hideous roots.. which looked fine .. at first but now my hair has faded ( which I expected with it being semi permanent ) but the grey roots are already making an appearance. So what do I do? If I use another semi permanent just on my roots won't my roots be way darker than the end?