Permanent Markers

What is the difference between permanent and washable markers?

I know ones permanent and one isnt, but i have a project for school and i need to know like price difference, chemical difference, visible differences and anything else

Public Comments

1. Permanent markers bleed through the paper easily and are extremely hard to get out of clothes if at all possible. Washable markers will be cheaper and not as messy.
2. Permanent will look better but it will not clean up if you get on anything Washable is made of weaker agents that can be cleaned easier Good Luck
3. "The permanent marker was invented in 1890. A permanent marker is a type of marker pen that is used to create permanent writing on an object. Generally the liquid is water resistant, contains the toxic chemical xylene or toluene, and is capable of writing on a variety of surfaces from paper to metal to stone" vs A non-permanent marker uses an erasable ink — an ink that adheres to the writing surface without binding or being absorbed by it — for temporary writing with overhead projectors, whiteboards, and the like. They may also be used by children when adults want to be able to clean up after them. The erasable ink does not contain the toxic chemical compounds xylene and/or toluene, unlike permanent markers. http://en.wikipedia.org/wiki/Permanent_marker