Emily (Tampa, Florida) on 01/06/2012
A little internet research suggested that henna is in fact a treatment for dandruff, lice, and other scalp issues. The only downside to this would be the fact that it's a dye of sorts, so you'd have to be willing to go with that. Worked great for my purposes, however, and I wasn't even anticipating it helping my scalp issues!
Replied By Lizzie (London) on 11/27/2015