Abstract: An aerosol dispenser assembly (1) having a container (2) that contains a liquid product, and a propellant for propelling the liquid product from the container (2). The propellant is a dual phase hydrocarbon propellant, is free of normal butane, and is at most 25% by weight of the contents of the container. A valve (4) is attached to the container (2) for selectively dispensing the liquid product from the container (2) as a mist, the mist having an average particle size of less than 35 &mgr;m (0.0014″), over at least 75% of the life of the dispenser assembly (1). The dispenser assembly (1) is capable of dispensing over 98% by weight of the liquid product from the container (2). A vapor tap (24) is formed in the valve (4) to facilitate thorough mixing of the propellant and the liquid product prior to dispensing, and a valve stem (12) is disposed in the valve (4). The valve stem (12) defines at least one stem orifice (26) for flow of the product during dispensing.