How long should I let a layer dry before painting over it?

A light, thin layer often dries in just a few minutes. A heavy, very wet layer can take 15 minutes or more. The time depends on how much water you used, the temperature and the humidity in the room.

How can I tell if a layer is dry?

  1. Look at it from the side. If the paper still looks shiny, it's still wet.
  2. Touch it with the back of your finger. If it feels cool, there's still moisture in the paper, even if it looks dry.
  3. Check the color. Watercolor gets lighter as it dries, so wait until it stops changing.

What happens if I paint too soon?

Painting on a damp layer can lift the color underneath, make the colors blend, or leave flower-shaped marks called "blooms". If you want crisp edges and clean layers, wait until the layer is completely dry.

How can I speed up drying?

  • Use a little less water. A damp brush tip, rather than a dripping one, dries much faster.
  • Leave the sketchbook open, flat, in a warm and airy spot.
  • Some painters use a hair dryer on a low, cool setting, held well away from the page, so the paint doesn't get pushed around.
  • Work on another part of the painting while the first area dries.

Good to know