After reading about all the chemicals in normal hair colours I decided that no more. I thought it was gonna be easy to find an eco-hairdresser in Uppsala but turns out that the only one here has quit. So instead I went to one in Finland while we were there.
My hair was in not very beautiful condition anymore before I went:
After some oil-massage, mud-treatment, some eco-colouring (including at least lemon-juice) and a hair-cut the result looked like this:
Still a bit lighter in the ends were the old colouring was but all in all the contrast is now less clear. Next time I might try to colour it myself with eco-colours, Noora did some colouring with henna powder and red wine. That sounds too cool not to try, even though I might have to stick to lemon and other stuff that gives lighter colours as I am not that dark-haired naturally and it is best to stick to something quite close to your own colour.
It was a nice experience and if I go to the hairdresser again I will try to pick an eco one. I do recommend it too if you have a dry or itchy scalp as the products they use naturally are more sensitive for your skin than chemical products.