790-1040. Rescue old unbaked clay! Sculpey Clay Softener is a softening agent, which will improve the texture of clays that have become dry and crumbly. Use sparingly by adding a few drops and kneading into clay until it softens. Also, great as an adhesive agent: apply sparingly to parts that will be attached to each other to increase the clay to clay bond! Std. Pk: 1 bottle.