![]() Like permanent markers, this ink has color pigment particles, a solvent to carry the pigments, and a polymer to help the pigments adhere to a solid surface. But the special oily polymer used in this type of ink does mean that dry erase marker stains will not wash out easily when treated with soap and water.ĭry erase markers such as Expo markers or Crayola dry erase markers contain three main ingredients in ink.
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