Dyson Airstrait wet to dry straightening is with air, No hot plates, No heat damage, Powerful, directional airflow smooths and aligns hair. This straightens from wet to dry, simplifying your routine. For a natural straight finish. No heat damage, Easy natural styling, Convenience without compromise.A 13-blade impeller spins up to 106,000rpm, propelling 11.9 liters of air through the machine per second. This generates up to 3.6kPa of air pressure, powerful enough to straighten hair as it dries.Your machine senses when hair is between the arms and automatically drops to low airflow when it's not – for quieter, more efficient styling.