THE NEXT LEVEL. Technology is the passion of Great Lengths International, and the Ultrasonic 5000 method is the result of that passion. This “cold fusion” method uses no heat. The Great Lengths strands are attached via ultrasonic waves. Extensionists and their clients are raving over the Ultrasonic 5000, which produces attachment sites that seamlessly flow from the client’s natural hair ends into the Great Lengths strands.
Just as resilient as the Thermal method, Cold Fusion can accomplish amazing results for the special needs of clients such as those with extremely fine, thin hair. The Great Lengths cold fusion, simply put, is the world’s finest system for the application of 100% human hair strands.

Jennifer, with Ultrasonic 5000 “Cold Fusion” extensions.