Most Libyan women don't feel complete unless their eyes are lined in dark black kohl. It makes them look beautiful and exotic - their dark eyes shining and the whites of their eyes appearing even more so with the effect of the kohl. But these products are really dangerous! Most contain large amounts of lead - in some cases up to 47%.
Lead is especially dangerous for pregnant women and children. Libyan women often decorate newborn babies eyes and small children with kohl. Besides it's use for cosmetic reasons, Libyan women believe that it prevents eye diseases, and argue that it was used by Prophet Mohamed.
The New York City Dept of Heath put out a press release warning against these products that are sold illegally in America for use by the immigrant population there. The article is very informative and I really recommend reading it and passing it along to anyone you know that uses these products. Link here: http://www.nyc.gov/html/doh/html/pr2007/pr027-07.shtml