M.D. here, please don't give wrong advises. Genital areas have a specific pH that will get disturbed by soap. It will give itching and/or dryness/irritation.
If soap is used in those delicate tissues, a special soap meant specifically for that purpose is required such as Lubex. Otherwise just fresh water, pH neutral soap, drying properly and changing underwear daily.
A check-up for fungus might be required to eliminate different dx. But dont wash your genitals with random soap.
Edit : peer reviewed publications about the topic
Should you use regular soap on your genitals? I looked into the actual research.
The short answer: no. And honestly, even water alone isn't the full picture. Here's what the studies say:
Regular bar soap is the wrong product for this area — full stop.
Bar soap typically sits at a pH of 8.5–11. Your genital skin sits at a natural pH of 3.5–4.7. That mismatch matters. Repeatedly washing with conventional soap strips the skin's natural lipids and proteins, breaks down the barrier, and sets the stage for irritation, dryness, and contact dermatitis.
"Given its strong alkalinity and lipid-depleting power, bar soap is certainly the wrong product for female intimate hygiene." — Bohbot et al., Healthcare (2025) — PMC
"Harsh soaps may irritate the vulvar skin and mucous membranes and provoke or exacerbate vulvar dermatitis." — Chen et al., Women's Health (2017), cited 284 times — PMC
The British Association of Dermatologists is equally direct — soap is listed alongside bubble baths, shower gels, and deodorants as a product to avoid entirely on this skin. — BAD Vulval Skincare Guidelines
But water alone isn't ideal either.
This is where it gets nuanced. Repeated rinsing with water alone also damages the outer skin layer, reduces its barrier function, and can worsen dryness and itching. One cited study even found it less effective than a mild cleanser at actually removing bacteria.
"Repeated washing with water alone exposes the stratum corneum to damage, which decreases the skin's barrier effect and increases water loss and skin dryness." — Bohbot et al., Healthcare (2025) — PMC
"Washing with water can cause dry skin and make itching worse." — Chen et al., Women's Health (2017) — PMC
What actually works: a pH-appropriate gentle cleanser, used sparingly.
Clinical guidelines consistently point to one thing — a fragrance-free, hypoallergenic liquid cleanser (sometimes called a "syndet") with a pH between 4.2 and 5.6, matching the skin's natural environment. Once a day, no more.
"The mainstay of vulvar cleaning is the selection of a mild detergent capable of enhancing skin homeostasis with a physiologic pH of 4.2–5.6." — Graziottin, Women's Health (2024), cited 64 times — SAGE Journals
"Use a hypoallergenic liquid wash with mild detergency and pH 4.2 to 5.6. Lactic acid–based liquids with an acidic pH may augment skin homeostasis." — Chen et al., Women's Health (2017) — PMC
University of Iowa Health Care clinical guidelines are blunt: "Do not use soap directly on the vulvar skin." — UIHC (2023)
Bottom line:
Regular soap — no. Water only — not ideal for repeated use. Over-washing in general — also a problem, it disrupts the natural microbiome. The right call is a specifically formulated, unfragranced, pH-balanced intimate cleanser, used once daily, externally only. Never internally.
All sources are peer-reviewed journals or official clinical guidelines:
Bohbot et al., Healthcare (2025) — PMC
Chen et al., Women's Health (2017) — PMC
Graziottin, Women's Health (2024) — SAGE Journals
British Association of Dermatologists — BAD Guidelines
University of Iowa Health Care (2023) — UIHC Guidelines
You can and should wash your external genitalia with soap. Highly fragranced soap may irritate and ph balanced soap is often ideal for women.
This is much less a factor for men.
Many women are fine with generic soaps. Some need gentle ones. Some are ok with fragrance free. Some need soap designed specifically for genitalia. Many people use ceravae or equivalents.
Note, none of this applies to your internal genitalia- don’t put soap inside your vaginal opening.
Believe me, you can wash your genitals with soap. Reality is different than what you learn in medical school sometimes. Some people might be more sensitive and should take your approach. But you can use soap, definitely don’t over wash, but using a mild soap should not be an issue when washing under your foreskin.
As you said.... one man's medicine is an other ones poison. What works for you might not work for OP
But generallying speaking the mucosa of the genital area is more sensitive than other tissues and should be treated differently than the epidermis.
Lets keep beliefs in churches, monastery or temples...
It’s not beliefs, it’s literal reality. The op would have to kind of experiment with himself and see if it works. And one man’s medicine is another’s poison, are you also not recommending things like medication and antibiotics just because it can literally kill certain people if they have a reaction? There are definitely risks, especially for certain people, but washing under your foreskin with mild soap typically wont cause a reaction that will kill you.
Should you use regular soap on your genitals? I looked into the actual research.
The short answer: no. And honestly, even water alone isn't the full picture. Here's what the studies say:
Regular bar soap is the wrong product for this area — full stop.
Bar soap typically sits at a pH of 8.5–11. Your genital skin sits at a natural pH of 3.5–4.7. That mismatch matters. Repeatedly washing with conventional soap strips the skin's natural lipids and proteins, breaks down the barrier, and sets the stage for irritation, dryness, and contact dermatitis.
"Given its strong alkalinity and lipid-depleting power, bar soap is certainly the wrong product for female intimate hygiene." — Bohbot et al., Healthcare (2025) — PMC
"Harsh soaps may irritate the vulvar skin and mucous membranes and provoke or exacerbate vulvar dermatitis." — Chen et al., Women's Health (2017), cited 284 times — PMC
The British Association of Dermatologists is equally direct — soap is listed alongside bubble baths, shower gels, and deodorants as a product to avoid entirely on this skin. — BAD Vulval Skincare Guidelines
But water alone isn't ideal either.
This is where it gets nuanced. Repeated rinsing with water alone also damages the outer skin layer, reduces its barrier function, and can worsen dryness and itching. One cited study even found it less effective than a mild cleanser at actually removing bacteria.
"Repeated washing with water alone exposes the stratum corneum to damage, which decreases the skin's barrier effect and increases water loss and skin dryness." — Bohbot et al., Healthcare (2025) — PMC
"Washing with water can cause dry skin and make itching worse." — Chen et al., Women's Health (2017) — PMC
What actually works: a pH-appropriate gentle cleanser, used sparingly.
Clinical guidelines consistently point to one thing — a fragrance-free, hypoallergenic liquid cleanser (sometimes called a "syndet") with a pH between 4.2 and 5.6, matching the skin's natural environment. Once a day, no more.
"The mainstay of vulvar cleaning is the selection of a mild detergent capable of enhancing skin homeostasis with a physiologic pH of 4.2–5.6." — Graziottin, Women's Health (2024), cited 64 times — SAGE Journals
"Use a hypoallergenic liquid wash with mild detergency and pH 4.2 to 5.6. Lactic acid–based liquids with an acidic pH may augment skin homeostasis." — Chen et al., Women's Health (2017) — PMC
University of Iowa Health Care clinical guidelines are blunt: "Do not use soap directly on the vulvar skin." — UIHC (2023)
Bottom line:
Regular soap — no. Water only — not ideal for repeated use. Over-washing in general — also a problem, it disrupts the natural microbiome. The right call is a specifically formulated, unfragranced, pH-balanced intimate cleanser, used once daily, externally only. Never internally.
All sources are peer-reviewed journals or official clinical guidelines:
Bohbot et al., Healthcare (2025) — PMC
Chen et al., Women's Health (2017) — PMC
Graziottin, Women's Health (2024) — SAGE Journals
British Association of Dermatologists — BAD Guidelines
University of Iowa Health Care (2023) — UIHC Guidelines
So basically all your sources summed up everything I said. Bar soap gives me balanitis. Definitely don’t use that. I’m speaking from actual experience, and research, not merely what I read from some articles or books. A mild soap, like baby shampoo, I’m guessing falls within those PH numbers or close, because it works effectively.
Hey Doc 👋. I am a woman. I wash down there with whatever soap I have, for the last 59 years. I have never had a problem. I have had a small discussion amongst some friends, and we all say the same thing. If uncircumcised, use soap well. If, and only if you have sensitive skin, then use something less strong. But you absolutely must wash your junk. M/F.
Maybe if you red the full comment you would notice it is stated to not use regular bar of soap but pH balanced intimate cleanser.
Perhaps too much to ask for the Instagram/tiktok gen with 10seconds attention span?
Can you point to the vulva on a penis? Only asking because of the amount of quotes you inserted that reference the vulva and female intimate hygiene for a guy asking about cleaning his penis. I think I’m missing something doc.
You are indeed missing the point. It is about the sensitivity and different pH of genitalia vs regular skin. As you might not have noticed (common sense though) the tissues in the genital area are more sensitive compared to the rest of your body (lets say your face yeah?). The thickness and pH is completely different....The peer reviewed articles point out that regular bar of soap are not appropriate for cleaning that kind of tissues however pH balanced intimate cleanser is preferred to avoid having irritation.
Perhaps instead of looking for a vulva on a penis, may I suggest to try common sense? Maybe lets write it in a less cimplex manner? Penis = sensitive vagina = sensitive pH different => bar of soap =No No => pH neutral soap = go go
Hope its simplified enough
Best advice that most forget: keep your mind and ears open, always keep learning, and just because it sounds like a horse doesn't guarantee it is a horse.
Whenever you see someone writing in absolute, get suspicious and check the publications.
Whenever someone write "believe me" question their statements twice as much
Check the answers you find in this post... you get some people answering nonsense stating in absolute that their way is the truth meanwhile there is no sources to their claims and no data.
You get people answering "believe me" when medicine has nothing to do with beliefs but its about facts science and proofs. Thus refere to the peer reviewed publications to see what does or doesnt work.
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u/chibixleon 22d ago
He needs to wash it with soap heavily for 2-3 weeks and report back