Bellafill is primarily used to increase penile girth. While some men notice an improvement in flaccid length after treatment, it is not considered a lengthening procedure. Occasionally, patients report a perceived increase in erect length as well. This may be related to improved tissue support, changes in skin expansion, or simply the visual effect that can occur when girth is increased. However, erect length gain is not a predictable outcome and should not be considered an expected benefit of Bellafill treatment. Because individual anatomy and response to treatment vary, I do not quote specific length gains in inches or centimeters. The goal of Bellafill is enhancement of girth, with any changes in apparent or actual length considered secondary and highly variable from patient to patient. I hope this helps! Dr. Dima