Conversation:

Stinging nettles, steeped in boiling water and then use the water as a rince after shampoo.

(Just reading this article makes my head itch )

What you didn't mention there was dandruff is a modern term and as such didn't actually exist until the late 70's and early 80's. There is no such thing as dandruff, it's just dead skin. It's another one of these things created by marketing people to make the normal folk paranoid.

yes, before that it was called 'scurf'

Washing the hair with cooled redbush (rooibos) tea before the final rinse is a very effective dandruff treatment.

Lbclaire