Cassia: Known as neutral henna, cassia obovata can add a golden or light blonde tint to the hair without affecting ... all organic hair dyes are completely free of harsh chemicals or fully ...

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The vast majority of reactions to hair ... chemicals. However, five of this study's subjects have been regularly coloring their hair for at least 1.5 years with the PTDSbased hair dyes without ...

And Tinctorium isn't the only company working to replace harsh chemicals ... and the amount of chemicals and CO2 emissions." Bacteria are even being used to produce hair dye - although the process ...

Hair can be dyed every color by the same processes and chemicals as thoseusedin ... although an effectual dye. The hair is rendered harsh by it, and has to be softened with grease or oil.

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He added: 'The most important factor in exposure to hair dye is the shade you use. 'All of the shades use essentially the same chemicals, but there's quite a lot more of them (the chemicals ...

Hair dyes contain chemicals that in rare cases can cause ... It's quite scary to think, had that service been carried out without them having the skin test, what could've happened." ...