Local plants with which to wash hair?

I would like to try a plant/herbal wash to replace natural soap... possibly marshmallow root.
But first and more preferably... does anyone know of any plants that I could harvest myself rather than buying... which would work for this purpose? I live in BC, Canada.... surely there must be something out there!
I would really appreciate some advice on this!
But first and more preferably... does anyone know of any plants that I could harvest myself rather than buying... which would work for this purpose? I live in BC, Canada.... surely there must be something out there!
I would really appreciate some advice on this!
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