Strong bonds. Our research in hair science indicates that water causes hair to swell. This can make strands weaker, as the bonds holding the structure together may break. To dry hair quickly and minimise swelling, the Dyson SupersonicTM hair dryer is engineered with Air MultiplierTM technology and the Dyson digital motor V9 to create a high-velocity jet of controlled air. #DysonHair #HairScience #HairDamage #HairHealth #HealthyHair