Tempera: traditional egg-based paint and its uses

Composition and technique

Traditional tempera is prepared by grinding pigments to a fine powder, then blending them with egg yolk and a little water. Artists may add tiny amounts of other substances to adjust flow or drying. Because it dries so rapidly, tempera is applied in thin, semi-opaque or transparent layers and built up by hatching or cross-hatching rather than by the wet blending used with oil paint. Tempera is best used on rigid, properly prepared supports—most commonly wooden panels coated with a smooth gesso ground.

History and development

Tempera has ancient roots and was widely used across Europe, the Mediterranean and Near East for centuries. It was the dominant technique for panel painting and manuscript illumination until oil-based paints gained prominence for large-scale easel painting. Even after oil became widespread, tempera continued in religious and devotional art and experienced periodic revivals among modern artists interested in its distinctive surface qualities.

Characteristics and practical considerations

• Appearance: matte, luminous, and capable of very fine detail.
• Working properties: fast drying, requires quick, deliberate strokes and layering.
• Durability: long-lasting when kept on a stable, rigid support and protected from extreme humidity.
• Limitations: not well suited to flexible canvases unless special grounds and supports are used.

Uses, examples, and modern context

Historically used for devotional panels and manuscript pages, tempera remains valued for icon painting and by some contemporary painters who appreciate its clarity and fine control. In schools and hobby contexts, many products labeled "tempera" are actually opaque water-based poster paints or gouache-style formulations, which differ in binder and handling from traditional egg tempera. For technical and conservation information, readers can consult specialist sources and museum literature on artist's paint technology and the practices of the Byzantine world.

Distinctions and notable facts

While the term "tempera" is used loosely in commercial and educational settings, the historic technique—pigment bound in egg—remains distinct in materials and appearance. Some artists combine tempera with oil in hybrid approaches, but pure egg tempera continues to be prized for detail, surface clarity, and its historical associations.