The Aerodynamics of the Coanda Effect in Hair Styling
The Coanda effect is a phenomenon in fluid dynamics where a high-velocity jet of air clings to a nearby curved surface. In air-wrap multi-stylers, a high-speed digital motor forces air through microscopic lateral slits along a cylindrical barrel.
This creates a continuous vortex that draws hair strands automatically toward the barrel surface, wrapping them neatly without requiring manual winding or mechanical clamps. As the air dries the hydrogen bonds in hair keratin, it sets a long-lasting curl with minimal thermal damage.
Dyson vs Shark: Airspeed, Heat, and Hair Texture Matching
The Dyson Airwrap uses a 13-blade digital V9 motor running at 110,000 RPM, delivering softer, more focused airflow ideal for fine, color-treated, or fragile hair prone to frizz.
The Shark FlexStyle features a slightly more powerful drying motor with higher wattage. This makes Shark faster at rough-drying dense, coarse, or curly hair, though its airflow can be slightly louder and more turbulent on delicate fine textures.