The Hard Truth About Penis Botox

06.03.2026, 22:04 allure.com

Most of us associate neuromodulators like Botox with an image of a syringe poised precisely above the forehead or between a furrowed brow—not a needle ominously placed in the shaft of a penis. But that’s exactly what’s happening, as more men are having neuromodulators injected into their nether regions. We know this because they’re not afraid to share this information, either.

On a new episode of his podcast Boyfriend Material, Australian influencer and Dancing with the Stars alum Harry Jowsey revealed that he had Botox injections in his most sensitive area, seemingly for cosmetic reasons. "I actually did get Botox [in my penis]," Jowsey shared, adding that one of his friends has also done it. "They said it relaxes the muscle. It's very smooth now, which is good.” (Jowsey also noted that while you can also get your scrotum injected, he decided not pursue that specific cosmetic lane.)

And in news that will surprise absolutely no one familiar with his longevity endeavors, tech entrepreneur and bio-hacking fanatic Bryan Johnson also had penile Botox. In his case, the goal was extra length, as well as better erections. “It increases penis length by 1 cm,” he wrote on X in 2024, adding that Botox injections can also improve “erection hardness, peak systolic velocity, end diastolic velocity, and sexual health satisfaction.” (We’ll get back to those claims in a second).

Later, Johnson combined Botox with shockwave therapy, which he said “brought my night time [sic] erection biological age to around 20.” Roy Kim, MD, a board-certified plastic surgeon based in San Francisco, confirms that there may be a “modest improvement” in penis size via Botox injections. “If you inject Botox into areas of vascular smooth muscle, the penis appears larger, but only about one centimeter,” he says. As for those “biological age” claims, Dr. Kim says that living a healthy lifestyle, including exercise and abstaining from smoking and alcohol, can improve penile health, so Johnson’s overall approach to wellness is probably making a difference in his erections. “I’m not certain how many men are optimizing their health before considering Botox, low dose Cialis… but yes, they do help,” Dr. Kim shares.

"They said it relaxes the muscle. It's very smooth now, which is good.”

If you’re wincing thinking about this whole process, you’re not alone. When I told my husband the topic of this article, he visibly shuddered. “I’m writing about penis Botox,” I told a male friend. “Well stop,” he replied.

The thing is, penis injections of all sorts are more common than you think. As Allure previously reported, surgeons have been injecting hyaluronic acid and biostimulatory filler into the shaft of the penis to increase girth for a while now, though typically it’s done off-label. (Off-label refers to an unapproved use of an FDA-approved drug.) When it comes to Botox, the motivation is also “typically cosmetic,” says Andrew T. Cohen, MD, a board-certified plastic surgeon in Los Angeles. “Botox can relax certain superficial muscles around the genital area, which may create a smoother appearance of the skin,” he explains.

Penis Botox may also have medical benefits, however. According to Dr. Kim, Botox injections can help improve symptoms of erectile dysfunction. “Injecting Botox into the corpora caverns [sponge-y tissue that fills up with blood during an erection] relaxes those muscles and improves blood flow, so patients have a better, longer, or stronger erection,” he explains, giving Johnson’s claims of a more youthful erection some merit. Dr. Kim also flags a 2024 scientific study that shows “promising help” for premature ejaculation; when Botox is injected into the perineal muscle near the penis, it can reduce muscle strength during ejaculation and thus reduce early ejaculation, he explains.

When properly done, Dr. Kim estimates benefits will last anywhere between three to six months. Sean Doherty, MD, a board-certified plastic surgeon in Boston, says that while a plastic surgeon can safely and effectively inject scrotal Botox, he recommends patients visit a board-certified urologist for any treatments related to a potential medical condition. Risks may include bruising, swelling, pain, temporary erection weakness, and infection, he adds. Dr. Cohen stresses that these aren't procedures you get at a walk-in med spa. “The anatomy in this region is complex, and treatments should always be performed in a medical setting with careful patient evaluation beforehand,” he says.

“If you inject Botox into areas of vascular smooth muscle, the penis appears larger, but only about one centimeter."

According to Dr. Doherty, scrotal Botox (or “Scrotox”) also “has the potential” to become popular, primarily for cosmetic reasons—just as Jowsey mentioned on his podcast. “It is injected into the Dartos muscle [a layer of muscle] of the scrotum with the goal of relaxing the scrotal muscles and making the scrotum appear smoother,” Dr. Doherty explains “Wrinkles are reduced in the scrotal tissue and the appearance of skin retraction may occur.” He adds that scrotal Botox has also been used by athletes to decrease sweating, reduce friction, and improve comfort in warm temperatures. The more you know! (And don’t forget about “Penisgate” at the Winter Olympics, where ski jumpers were accused of injecting their penises with hyaluronic acid to allegedly improve their performance.)

Penis-tox is certainly a “fringe” trend for now, but who knows, it could eventually catch on; Dr. Kim points to changing pubic hair trends as an example, noting that grooming and shaping pubic hair wasn’t “normal” until the early 2000s. But for now, “I do not see a clamor or societal push to have a smooth-skinned penis appearance,” he says; he does not offer penis Botox in his practice and says no one has asked about it yet. Dr. Cohen agrees, calling Penis-tox and Scrotox “relatively niche procedures” that will probably remain specialized and performed by experienced physicians.

That being said, more men are talking about the work they’ve had done than ever, which means others might be more willing to visit the doctor’s office for a little tweak here or there. “Male aesthetics is one of the fastest-growing segments in cosmetic medicine,” says Dr. Cohen. “More men are seeking treatments for facial rejuvenation, body contouring, hair restoration, and skin health. As the stigma around male cosmetic treatments continues to fade, it is not surprising that interest is expanding into areas like intimate wellness.” Very intimate wellness, indeed.

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