HYAcorp MLF1 Hyaluronic Acid Filler for Penile Girth Enhancement

The goal of this clinical trial is to learn how well HYAcorp MLF1, a hyaluronic acid filler, works for penile girth enhancement in men aged 25 years or older. The study will also learn about the safety of the treatment and how long its effect lasts. The main questions it aims to answer are: How much does average flaccid penile circumference change 6 months after treatment? What side effects or medical problems occur after treatment, and how long does the increase in penile girth last? Participants will: Receive one treatment with 20 mL of HYAcorp MLF1 Have penile circumference measured before treatment and during follow-up Complete questionnaires about satisfaction and sexual function Attend follow-up assessments for up to 12 months