A crayon is a stick of colored wax, charcoal,chalk, or other materials used for writing, coloring, and drawing. A crayon made of oiled chalk is called an oil pastel; when made ofpigment with a dry binder, it is simply a pastel.oil pastels are a popular medium for color artwork. A grease pencil or china marker (UKchinagraph pencil) is made of colored hardenedgrease and is useful for marking on hard, glossysurfaces such as porcelain or glass. Some fine arts companies such as Swiss Caran d'Ache manufacture water-soluble crayons, which once applied to media, the crayons' colors are easily mixed.
They are easy to work with, not messy (as paint and markers are), blunt (removing the risk of sharp points present when using a pencil or pen), non-toxic, very inexpensive, and available in a wide variety of colors.
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