K18 Airwash Dry Shampoo is a Revolutionary dry shampoo reduces oil & odor - weightlessly. Non-aerosol dry shampoo features newly patented odorBIND smart-release biotechnology actually recognizes and captures odor-causing sweat and oil molecules and eliminates them—replacing the odor with a subtle, easily layered fragrance. Biotech-derived Mediterranean microalgae helps balance scalp and control excess oil production over time.