Pigmentation may be any number of artificial or natural ingredients with shade, such as sulphur for yellow-colored or cobalt for red. Conventional pigments were based on nutrients or vegetation, and many have shown volatile over a very long time, so that many old paintings look very different from their unique overall look. Modern pigments often used artificial substances. Along with is blended with oil, usually linseed oil but other natural oils may be used as well. The various natural oils dry in a different way, developing various effects.

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