Most eyeliners use chemical dyes or coloring agents. Our eye is gentle,sensitive and moist organ.. chemicals will react on the fragile surfaces and cause corrosive scarring, dry eye and allergies.If using EyeLiners, make sure that it is of good quality and that you apply it only on the skin (Outer eyelid) and it does not come into the eye (inner part of the eyelid). Wash it off as soon as you reach home (keeping the eye closed). Avoid glitter. In case of any allergy, never use it again. If you are a regular user, ask your eye doctor to see if there is a deposit of the color inside the eyelid the next time you go for an eye check.