Tips on dyeing my almost black hair a brown color...after already dyeing.?

I'm mostly Greek. My natural hair color is very, very dark brown, almost indistinguishable from black.

I've dyed my hair many times before, but just once recently, a few months ago. I used Revlon dye, one of the lightest blonde dyes because anything darker won't have an impact on my dark hair. My hair turned a nice medium brown color I was happy with.

Now I have a couple inches of new dark growth. Last night I bought a Revlon 'Dark Ash Blonde' color, but I am unsure how to use it.

Do I? :

a) apply the dye to just the new growth/roots

b) apply to just the roots for most of the time, and then add the dye to the med. brown hair at the last few minutes.

or

c) apply the dye to the whole head evenly?

or

d) your advice?

I just don't want it to make my dark black roots turn brown and make my brown dyed hair turn light brown. I want one color on my whole head, obviously.

I rather not go to a salon, if that's your opinion.

Thanks for your suggestions in advance.

Tips on dyeing my almost black hair a brown color...after already dyeing.?

When you lighten your hair you make it drier, just as when you darken your hair you moisturize it - so know that when you add this new color (lightener) your going to make the new growth lighter but also the old hair more brittle. You can rub it into all your hair and it will come out fine-looking - but the hair that's already been dyed with break off easier. I would suggest you do the whole head ( if you just rub it into the roots you risk that your old coloring has faded and your crown will be lighter than your ends).

Tips on dyeing my almost black hair a brown color...after already dyeing.?

i think b)

if that doesnt work, try applying the whole head

Tips on dyeing my almost black hair a brown color...after already dyeing.?

well, b and c. first you dye your roots,for 3 min. then, apply the dye to your whole head. for the remanider of the time