Does Himi Gouache Dry Out? || How To Fix Dry Gouache.
How To Fix Dry Gouache After Before Step: 1 Add Water Use water to add moisture back into the gouache. The reason that your gouache is so dry is because the air around it absorbed its water. Adding water back into it will solve this. Preferably you would use a spray bottle but using an eyedropper or even a sink sparingly will do the trick. Step: 2 Let Sit After adding about 3 tbsp of water, let the gouache sit for anywhere from 3-5 mins. Step:3 Stir If you put a toothpick in and the gouache is still stiff, add more water and allow it to sit longer. When you can begin to move a toothpick in gouache you are good to go. You should continue to stir until the paint is the consistency of thick pancake batter. Final Product