A penis extender can start to create results in the first few weeks. But these results are temporary, at first. It takes at least 12 weeks to see results that will be permanent once you stop your routine, and it can take about six months to a year to maximize your gains.Chung, E., & Brock, G. (2013). Penile traction therapy and Peyronie’s disease: a state of art review of the current literature. Therapeutic Advances in Urology, 5(1), 59-65. https://doi.org/10.1177/1756287212454932