I used to use these wash-in, wash-out colouring shampoos. They only lasted for about 2-3 washes which I liked. It was just to give my hair a little bit more of a red tinge (it's browny red, naturally).
There don't seem to be any wash-in, wash-out colours on the market nowadays. Just semi-permanents. Don't want to damage my hair or risk going wrong. Since my hair is already slightly red, if I put anything too red on, it can go orange at the roots. So I'd rather a v v v temporary one.
Please excuse blathering. Any suggestions?