A crayon is a stick of colored
wax,
charcoal,
chalk, or other materials used for writing and
drawing. A crayon made of oiled chalk is called an
oil pastel; when made of
pigment with a dry binder, it is simply a
pastel. A grease pencil (UK chinagraph pencil) is made of colored hardened
grease and is useful for marking on hard,
glossy surfaces such as
porcelain or
glass. Wax crayons are commonly used for drawing and coloring by children. Crayons are a staple at most schools worldwide. They are easy to work with, not messy (as are paint and markers), blunt (removing the risk of sharp points present when using a pencil or pen), non-toxic, and are available in a wide variety of colors. The world's largest manufacturer of wax crayons is
Binney & Smith Inc., the manufacturer of
Crayola crayons, which are made of
paraffin wax, a petroleum product. Soybean oil can also be used to make crayons, although this is not as common.
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