Detergents are a scourge for society, both in terms of public health and of environment. We have conducted research to find washing methods without detergents. We have tested an original idea based on a recent discovery showing that hydroxide ions, naturally present in the water, may serve as surfactant, but only if water is degassed. In this experimental study,we show that we can wash dirty laundry, simply with water, degassed with a vacuumpump ; degassing playing the double function of mechanical desorption and emulsion stabilization.