But he did reveal some key ingredients. Katzel: Inside of a lava lamp, you've got wax, which is mostly paraffin wax. That's your lava. Jones: Paraffin wax is a common wax made from petroleum.

The lava lamp achieves its evocative effect through a simple formula. A food-grade glass bottle is filled with a mix of wax and water in contrasting colours. Still proudly made in Britain, each lava ...