I used to be Tatty Devine by the way, I namechanged, but under that name I used to contribute to lots of threads about hair colour, particularly home hair colouring and home colouring but with professional dyes.
Over the past year or so I've been trying to achieve the perfect shade of ginger that is more ginger than it is brown, but not too dark, but not TOO ginger, such that it looks very unnatural.
I experimented a bit with various shades of intense copper and the like but have decided that the best shade of ginger, the most natural close to "real ginger" is more gold that it is copper, but does have a copper contingent, but no mahogany, no brown, and no "red" as such - just mainly gold with a bit of copper. Think Bianca Jackson in Eastenders (Patsy Palmer) but perhaps slightly darker if you are working from a darker base.
Anyway, you can't buy it in a shop, its professional only, and any gingers going grey who want to cover it can try this, do a strand test by all means before you slap it on all over.
Majirel 8.34
Buy a 50ml tube of it (eBay) and buy a bottle of 6% (20 volume) peroxide (any brand).
Mix the 50ml tube with 75ml of the peroxide which will yield 125ml, enough to cover most hair unless its very long or very thick.
Mix it well, let it sit for a few minutes, slap it on, development time is 35 minutes. Add water, emulsify (lather up) then rinse out, shampoo, condition, dry, and admire your natural looking ginger hair.
Do do a strand test though. To do a strand test, raid your plastic measuring spoons in the kitchen and measure out 1/2 teaspoon of the tube dye and mix 3/4 teaspoon of peroxide to make a small amount to do a strand test with. Find some hair (perhaps at the side but well buried, try and find your greyest or lightest bit), snip it off, secure with a sticky label, paint the dye on, wrap in turkey foil, put it somewhere warm (down ya bra is good or under your laptop! - or airing cupboard!) to emulate a warm head environment, leave it for 35 minutes, rinse it, dry it, and observe it in natural light. If it looks scary, don't do it.
Let me know how you go, anyone who tries it! There was a regular, was it Trillian Astra? Tethersend? I can't remember, sorry, who asked about ginger and I had mentioned 7.4 or 7.43 but I now am of the belief that more gold, and a lighter base is more natural and better for dying greys so give it a try if you are yet to find your ideal natural ginger shade!