There is insufficient evidence that kajal is safe to use and effectively reduces blepharitis symptoms. Traditional eye care makeups like kajal and kohl have long been used since ancient times. Many people claim that both products benefit eye health and treat eye diseases such as blepharitis, cataract, conjunctivitis, etc.  However, most commercially made kajal and other similar eye products contain high levels of lead, a very poisonous substance that can cause poisoning. The U.S. Food and Drug Administration does not approve these products for cosmetic and other purposes. Please do not use kajal as it's not proven 100% safe. If you've been exposed to it or other similar materials, stop using it and see your doctor immediately.