T r o y: "DYING TO BE DARK": DYING TO BE DARK Some people hate the idea of getting old, and use dyes to hide grey and white hairs. In the past, the dyes often contained lead, which reacted with sulfur in the hair to make black lead sulfide. Other hair dyes contained silver, and they were less poisonous, but could leave people with burns on their scalp, or a grey colour in their skin. These days, dyes are tested and so they are fairly safe.

Some people hate the idea of getting old, and use dyes to hide grey and white hairs. In the past, the dyes often contained lead, which reacted with sulfur in the hair to make black lead sulfide. Other hair dyes contained silver, and they were less poisonous, but could leave people with burns on their scalp, or a grey colour in their skin. These days, dyes are tested and so they are fairly safe.

It's True! You Eat Poison Every Day Peter Macinnis

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