This chapter discusses the risks of using chemical hair dye, and the epidemiology of millions of cases of hair dye allergy and introduces the solution for allergies to chemical hair dye and associated chemical sensitivities.
This is an expanding collection of research papers on the history of henna approached through the effect of climate change and human migrations on henna since the most recent glacial period to the present.
This chapter discusses the addition of metallic salts and other dyes to henna, and how these created conflicts with chemical hair dye.
This chapter details the botany and phytochemistry of henna, and microscopy of henna in present and past production.
This chapter 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.
Learn about the necessary chemistry of mixing henna and cassia with a mildly acidic liquid. This chapter discusses several sources of fruit acids, and how each has a different effect on henna.
This chapter discusses the mixing, dye release, formulation, and testing of a wide range of non-chemical permanent colors from henna, indigo, and cassia. This chapter includes step-by-step instructions to produce the color you want for your hair.
This chapter has step-by-step instructions for first time users dyeing hair blonde, red, brunette or black with henna indigo, and cassia.
This chapter has step-by-step instructions for maintaining your gray roots as they grow in; dyeing them red,brunette, or black.
This chapter discusses the application of henna over chemically lightened hair, and chemically lightening hennaed hair and demonstrates the technique of highlights with henna and foils.
This chapter contains step-by-step instructions for using henna, cassia, and indigo to dye relaxed hair, natural hair, and locs.
This chapter provides answers to the most frequent questions from people who henna their hair; these include problems with hard water, slight adjustments in color, getting complete and permanent color, and the occasional surprise.
This chapter discusses the safety and wellness aspects of dyeing your hair with henna: why it is recommended for pregnant and nursing women, how it can enhance your wellness and who should not dye their hair with henna.
This chapter is directed to stylists who wish to incorporate henna into their salons because they need to serve clients who have become sensitized to chemical hair dye, or they, themselves, have become sensitized to chemicals.
This chapter discusses henna manicures and pedicures, as well as amla facials for salon practice, and provides step-by-step instructions.
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