Tea Tree Mint Foaming Hand Soap 16 ounce refill. Vermont Soap has created this Foaming Hand Soap formula without all the chemical detergents. They start with castile liquid soap and the foamer cap makes it come out like shaving cream. No propellants or chemical are used in the process, which forces the soap through a series of fine screens and mixes it with air. Vermont Soap's Foaming Hand Soap has a wonderful feel and a smooth luxurious lather that won't dry out or crack your hands.