Hair Dye
Hair dye or hair color is a chemical tool that is used to change the color of a person's hair. Hair dye is used mostly to change gray hair, since gray hair is a sign of an advanced age. Younger people that used hair dye use it as a fashion statement or simply because they want to change their hair color.
The Romans have been known to be interested in changing hair color and history revealed that they created over a hundred recipes that are made out of natural ingredients but unfortunately it could only darken hair. In Renaissance time, blonde was a popular choice because it was considered to be angelic and attractive. In 1907, Eugene Schueller, the founder of L'Oreal, created the first synthetic hair dye, but it wasn't widely sold. There have been concerns about hair dye and scientists are trying to find out if there is a link between hair color and cancer.