Beauty Basics: Is Hair Dye Safe?
John Masters, of the eponymous salon and beauty brand, says, "The lone shade of Henna that’s 100 percent natural is that orange-red one, which doesn’t suit many people." Like the other experts we spoke with, Masters sticks with herbal colors that contain no parabens, ammonia, or resorcinol.
For many, the potential environmental impact is the best incentive for using less toxic options. "You wouldn’t believe how many toxic chemicals are being rinsed from colorists’ sinks in the waterways," Masters says, noting that some later show up in freshwater fish and groundwater supplies.