Plants that Dye Hair discusses henna, indigo, and cassia, (lawsonia inermis, indigofera tinctoria , and cassia obovata) and the chemistry of each of these dye plants. Understanding the botany of these plants will help you understand how to get the best results from your henna hair dye.
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Index of specific topics in this chapter:
Page 3: Three Plants Dye Hair: Henna, Indigo, and Cassia
Page 5: Henna, Lawsonia Inermis
Page 15: Indigo, Indigofera Tinctoria
Page 21: Cassia Obovata