I have faded coloured bright red hair and would like a chestnut/maghagony colour. I have just done a strand test of Nice and easy 24 wash in number 81 (mahogany) and even after double the recommended time it has had no effect. Any ideas what I need to use to get the desired colour?
To be fair level 5 is a light to mid brown. If you want enough depth to "cover" you might need to do that. Failing that try a 6.35 but you might need professional colour to get this, it would be called Dark Golden Mahogany Blonde.