Is this actually just some form of mythical beast?
I swear I've tried pretty much every hair dye out there! From a brief flick through the Boots site, I have used L'Oreal Preference, Feria, tonight I tried that new Garnier Olia, each time I've used whatever colour looks like it will be a strong, obvious red. I think I've even tried an XXL red. I've got naturally quite dark brown hair, and I just want something that looks a vaguely natural-ish red. Not bloody purple like I'm getting every time. I look like I'm using Wella Plum Mousse 
I can't afford to get it done professionally, I haven't got time to try a trainee anywhere, home dye is about all I have time for. And I don't really want to do a pre-lightner as if it goes wrong I will look really stupid.
Is this the universe trying to tell me to go back to black instead, or is there a red hair dye that actually works?