Golden Open Acrylics are designed with a unique and relaxed set of working characteristics. Open Acrylics remain wet far longer than other acrylics and resist skinning on the palette during long painting sessions.
OPEN Slow-Drying Acrylics by GOLDEN, Titan Buff, 2 fl oz. Office Product. LESS WASTE: The slow-drying nature allows colors to last longer on palettes and preserve color mixtures for future use. Product Page.