The invention comprises a shampoo apparatus and method of use thereof, comprising: putting a shampoo and carbon dioxide into a container, at least a portion of the carbon dioxide comprising at least one of a solid form and a liquid form; sealing the container; warming the carbon dioxide by at least fifty degrees Fahrenheit to form a carbon dioxide gas, the carbon dioxide gas at least partially dissolved in the shampoo, the carbon dioxide gas comprising a concentration of one-half to ten percent of the shampoo by mass; and pressurizing the container to a pressure exceeding sixty pounds per square inch, such as where a headspace forms in the container, the headspace comprising the carbon dioxide at a concentration greater than one thousand parts per million, where the pressurized carbon dioxide yields a propulsive force, a foam expansion function, and a cleaning function.