Gauguin produced this painting by applying egg tempera onto canvas. Egg tempera is a painting process that uses egg yolk to bind pigments. The artist must manufacture the paints him or herself by the simple process of mixing finely ground pigment, water and dilute egg yolk. Tempera is normally applied in thin, semi-opaque or transparent layers. When dry, it produces a smooth matte finish. Because it cannot be applied in thick layers as oil paints can, tempera paintings rarely have the deep colour saturation that oil paintings can achieve. On the other hand, tempera colours do not change over time, whereas oil paints darken, yellow, and become transparent with age.
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