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Painting techniques · Lesson 4 of 5

Gouache

Gouache is a water-based paint with a high pigment load and usually some filler, making it opaque and matte. It is loved by illustrators, designers and animation background painters.

graded washtransparent glazes overlapping
Diagram: gouache.

Step by step

  1. Use paint the consistency of cream — not too thick (it cracks) and not too thin (it streaks).
  2. Work light over dark or dark over light: because gouache is opaque, you can paint light colours on top.
  3. Lay flat, even shapes with a soft, flat brush. Gouache excels at graphic, poster-like colour.
  4. Be aware that values shift as it dries — swatch on scrap paper first and let it dry.
  5. Layers can reactivate with water. Use a light touch for upper layers so you don't lift the paint underneath. Acrylic gouache does not reactivate once dry.
  6. Store finished work flat and avoid bending it, as thick layers can crack.
Common mistakes
  • Painting too thickly so it cracks.
  • Scrubbing over dry layers and lifting them.
  • Not testing dry colour before a big flat area.
Practice exercise

Paint a small poster-style landscape with five flat colour shapes, then a still life using only gouache's opacity to add highlights at the end.