A release spray is particularly suitable for molds with many smaller edges and corners, because the spraying process distributes the release agent optimally everywhere.
Release wax is ideal for the treatment of large and flat surfaces. It can be difficult to work the release wax evenly into smaller angles with a cloth.
PVA release lacquer is often used in combination with a release wax for epoxy resin. It serves as the last layer between release wax and the epoxy resin.