So my hair is highlighted blonde and it was last done 8 weeks ago so as you can imagine I have a lot of root showing! My natural colour is brown. What’s the best blonde dye I can use to lighten my roots up a bit? Or should I just wait until my hairdresser can do it? My natural colour is a warm brown so I don’t want to pick anything that’s going to give me orange roots! Is there a semi permanent that will do the trick? I’ve seen the ad for the Garnier one that HW uses & I know that’s permanent but tbh that always looks a slightly yellowy & if my hair is warmer I’m afraid my will turn out very warm! Help!