Erasable Liquid Chalk - Charcoal is an erasable medium intended to be used on erasable (non-porous) surfaces, with IOD Decor Stamps. ELC is pigment rich, a little goes a long way. We recommend applying the ELC with a brayer, in a thin even amount, onto the stamps. ELC has a generous open time suitable for stamping. Drying time varies depending on the conditions and application. 2 oz.