Auramol H15 is a specially formulated synthetic-based mould oil, having release properties which are superior to those of a conventional mould oil. Auramol H15 is supplied as a pale straw colour liquid ready for direct application. In addition to preventing adhesion of the cement matrix to the formwork, Auramol H15 allows air, which would otherwise be trapped, to escape from the surface during placing and vibration. This air release property minimises surface blemishes and results in a substantial reduction in remedial costs.