I dye my hair about every 3 weeks due to some grey in my roots. I use a garnier one which works fine and just do the roots usually. This is because i have noticed that my hair is getting thinner and also shorter! and Im wondering if the dye is damaging it so I've been trying to limit it.
My hair is also a bit resistant to dye and for a while every one i tried just tinted the grey rather than covering it! Sometimes a bit pink!
My question is that i would like to try something less harsh but which will still cover the grey and not wash out after a week. Also all the weird stuff (chemicals in the dyes and that thing that can cause allergic reactions) worry me a bit.
I did hear about some dye called "natural something", can't remember the name and was wondering if i should research that or try henna. I don't know much about henna and if you can get it in different colours, how you do it etc. Also i think i read that if you use henna you can't later use normal dye on top or get highlights. Is that true?