Liquitex Palette Wetting Spray keeps your colour/medium fresh and workable for longer. Slows drying time and prevents ‘skin’ forming on paints on the palette. Improves colour blending when applied to painting surface, thins paint & prevents mould formation using an anti-microbial ingredient. Maintains acrylic stability, paint adhesion, durability and archival quality.it is fully intermixable with all Liquitex and other acrylic products. Spray over paints on the palette or a still-wet painted surface as often as you like. The more you spray on, the thinner and more transparent your colour will become. If you’re working over a long period of time, mix into colour on the palette to keep it fresh for longer.