A former salon professional with 15 years in the industry, Kathryn Madison was surprised by how frustrating (and damaging) it was to dye her own hair at home. Mass-produced applicators were flimsy, messy, single-use plastics better suited for dressing a garden burger than putting fine touches on her roots. So Kathryn decided to put her salon experience to work. She knew this new tool had to be reusable. It needed precise flow control - no more blobs on blouses, no more sloppy over-dyeing. And it had to be easy. After years of research, design, and dozens of prototypes, The Hummingbird™ was ready to spread its wings.