Liquitex Crackle Paste creates a crackled texture as it dries on a rigid surface. Cracking varies depending on the thickness of the application. Use only with acrylic paint or mediums. Use on its own, paint over or mix with no more than 10-15% paint. Allow to dry at normal environment conditions. Do not force dry with an oven or a fan, and do not use with slow dry mediums. When using on wood, apply a layer of fluid or gel medium first and let dry.