Just wanted to share my discovery as blimey this stuff is amazing!! - I've been colouring my hair at home for years. I have coloured coppery red hair (naturally dark brown) which fades really fast and this this the very best stuff I've come across in terms of ease of use / results / conditioning qualities.
It's a semi - permanent colour mousse available in 16 shades (for salon use but easily available online) and it lasts about 8- 10 washes. It is peroxide free but bold enough to hide root growth for a few weeks! I've been alternating my permanent dye every other month with this. My hair is so much healthier for it and my colour stays bright and fresh for much, much longer. It also smells lovely.
You get enough for 2 -3 applications in one can, depending on your hair length and thickness. Wash and towel dry your hair, protect your hairline and distribuite it evenly over the hair / comb through. Its really, really easy to apply as its a mousse (wear gloves though as its very pigmented). Leave for up to 20 minutes and rinse. It comes in 16 shades (you can even mix them) - I'm using the copper blonde shade and I love, love, love it!
www.schwarzkopf-professional.co.uk/skp/uk/en/home/products/colour/igora-expert-mousse.html