Spanish term (edited): encαustica

producto abrillantador empleado para embellecer y proteger otras superficies, formado por cera con empleo de esencias minerales o disolventes orgánicos o emulsionando la cera en el agua para darle fluidez, modificado a menudo por resinas y aceites

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and wax paper). A little more involved than just straight painting .
Waxing adds another dimension to one's work

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Waxing Poetic: Encaustic Art in America during the Twentieth Century. by Gail Stavitsky, Ph.D., Chief Curator. Since the Renaissance, no other painting technique

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Encaustic painting originated in ancient Greece. By 800 B.C. shipbuilders were already using beeswax to waterproof and caulk the hulls of their vessels, adding pigments to the wax to create colorful designs. The concept evolved and spread to Egypt, where artists painted realistic wax portraits on the lids of boxes that housed mummified remains. But by the seventh century A.D. the use of encaustic had fallen out of favor