Abstract: Curly or kinky human hair is permanently relaxed into a relatively smoothed or S-curved condition by a series of treatments involving application of a non-injurious composition containing a water solution of a salt of a weak acid to disrupt internal bonds of the hair, while manipulating and straightening the hair, then removing and replacing the first composition with a fixative to reconstruct or modify the structure of the hair, and finally applying a stabilizing composition which also acts to set and condition the hair.

Abstract: Method and apparatus for treating of waste gases, such as hot-flue gases, to remove therefrom pollutants in the form of solids, such as fly-ash and the like; and also for the removal of chemical substances present in a gaseous form, such as the oxides of sulphur. The solid waste materials, such as fly-ash, are removed from the flue gases by mechanical separation, while the gaseous pollutants, such as sulphur dioxide and/or sulphur trioxide are removed by a scrubbing action with another chemical substance carried in a solution and dispersed by spray action.