Hexagonal water, also known as gel water, structured water, cluster water,[1] H3O2 or H3O2 is a term used in a marketing scam[2][3] that claims the ability to create a certain configuration of water that is better for the body.[4] The term "hexagonal water" refers to a cluster of water molecules forming a hexagonal shape that supposedly enhances nutrient absorption, removes metabolic wastes, and enhances cellular communication, among other things.[5] The scam takes advantage of the consumer's limited knowledge of chemistry, physics, and physiology. Gel water is referenced in the version of the hoax in which plants or animal fascia are said to create or contain a "fourth phase" of water with an extra hydrogen and an extra oxygen,[6] despite the reality that this compound is neither water, nor stable.