Description Dura Form & Mold Release is a silicone-free, non-staining release agent that is used to release regular concrete and modified cement systems from polyurethane molds, form-liners and edge liners.  It is specially formulated not to damage polyurethane mold and forms and to promote crisp detail in the finished concrete impression.  Dura Form & Mold Release is a pale, fast drying, easy-to-use liquid that is non-toxic and low odor.