There are three types of colored pencils:
- Wax: Pigments are bound together with wax to create either hard or soft pencil cores (the colored part of a colored pencil). Wax-based pencils provide excellent coverage but are more prone to breakage, quick wear and debris. They also produce bloom, a coating of powdery film that appears after the color has been applied.
- Oil: The binder (substance that holds the pigment together) consists of vegetable oil, which does not produce bloom. Oil-based pencils are slightly harder than wax-based.
- Water-soluble: These pencils can be either wax or oil based, hard or soft. An emulsifier is added, allowing the pigment to be liquefied with water.
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