Dry shampoos have existed for years, either in powder or aerosol form. They remove excess sebum quickly from hair without the need to wet it. According to a new L'Oréal patent application, such products work by absorbing sebum through powders chosen for their sebum-absorbing qualities.
Patent Pick: Dry Shampoo Recipe Calls for Corn, Potatoes and a Dash of Zinc Salt
Nov 21st, 2017