Developed by industry experts and grounded in rigorous science, we are honored to pioneer the extension of our product’s reach—quite literally—by conducting comprehensive lab tests to validate the durability, quality, health, and longevity of our extensions.

Independent clinical testing has profoundly demonstrated the resilience of our hair through numerous studies. These studies compared Prolonged Hair’s level 12 processed hair to a competitor’s level 9 processed hair, showcasing our superior quality.