Disdvantages of Acrylic Paint:

Answer 1

Dries very fast, though working time can be increased by adding retarding medium to paint, spraying water on a painting, or using one of the brands with an longer drying time. Completely waterproof once dried, so cannot be removed by rewetting the paint. Difficult to remove from a brush if it's dried in it. Except when used in thin washes, colors dry a bit darker than when applied.