Would You Get a Shot in Your Penis?! Injecting Botox to Upgrade Size and Appearance — What Happens After?

When most people hear “Botox,” they think of forehead wrinkles. That answer is correct — but one of the rising trends in men’s aesthetic treatments is injecting it directly into the penis.

In a recent episode of the podcast Boyfriend Material, Australian influencer and former Dancing with the Stars contestant Harry Jowsey revealed that he had Botox injected into his most sensitive area (apparently to improve the appearance of his penis). “I did get Botox in my penis,” Jowsey shared, adding that a friend of his had done the same. “They said it relaxes the muscle, and now the surface is really smooth, which is nice.” (He also mentioned that Botox can be injected into the scrotum, but he chose not to go that far.)

Silicon Valley longevity enthusiast Bryan Johnson has also tried it. His goal was to increase penile length and improve erectile function. “It can increase penis length by 1 cm,” he wrote in a 2024 post on X, adding that Botox injections may also improve “erectile rigidity, peak systolic velocity, end-diastolic velocity, and sexual health satisfaction.”

Johnson later combined Botox with shockwave therapy and claimed it brought the physiological age of his nighttime erections back to around 20 years old. San Francisco plastic surgeon Dr. Roy Kim confirmed that Botox can produce a “modest improvement” in penile size. “If you inject Botox into the vascular smooth muscle area, the penis can look a bit bigger — but we’re talking about roughly one centimeter,” he said. Regarding Johnson’s claims about “physiological age,” Kim noted that healthy lifestyle factors (exercise, not smoking, limiting alcohol) already improve penile health, so Johnson’s overall regimen likely contributed to better erections.

Why Men Are Doing It

If the idea of needles in that area makes you uncomfortable, you’re not alone. When the author mentioned the topic to her husband, he visibly shuddered. Another male friend simply said, “Stop talking…”

In reality, various types of penile injections are more common than many people realize. Surgeons have been injecting hyaluronic acid and biostimulatory fillers into the penis for enlargement for some time (usually as an off-label use). Los Angeles plastic surgeon Dr. Andrew T. Cohen says the motivation for Botox is “usually cosmetic.” He explains: “Botox can relax certain superficial muscles around the genitals, which makes the skin look smoother.”

Beyond pure aesthetics, there may be some functional benefits. Dr. Kim notes that injecting Botox into the corpora cavernosa (the chambers that fill with blood during erection) can relax those muscles and improve blood flow, potentially leading to better, longer-lasting, or stronger erections. He also referenced a 2024 study suggesting that Botox injected into the perineal muscles near the penis can significantly help with premature ejaculation by reducing the force of the muscles involved in ejaculation.

How Long It Lasts and the Risks

Dr. Kim estimates that when performed correctly, the effects last three to six months. Boston plastic surgeon Dr. Sean Doherty points out that while plastic surgeons can safely perform scrotal Botox, patients should consult a urologist for any treatment related to potential medical conditions. Risks can include bruising, swelling, pain, temporary erectile weakness, and infection. Doherty emphasizes that these procedures should not be done in a regular clinic: “The anatomy in this area is quite complex. Treatment should be performed in a medical facility after careful patient evaluation.”

Scrotal Botox (sometimes called “Scrotox”) is also gaining some attention for cosmetic reasons — relaxing the dartos muscle so the scrotum looks smoother and less wrinkled. Some athletes reportedly use it to reduce sweating and friction.

Still a Niche Trend

Penile Botox remains a relatively niche procedure. Dr. Kim says he does not currently offer it in his clinic and has not had patients asking for it. Dr. Cohen agrees that both penile Botox and Scrotox are still “relatively niche procedures” that will likely stay in the hands of experienced specialists.

That said, more men are openly discussing the aesthetic procedures they’ve had. “Men’s aesthetics is one of the fastest-growing segments of the beauty market,” Cohen notes. As the stigma around male cosmetic treatments continues to fade, interest in intimate health and appearance is also rising.