9 Reasons the New Smell Down There Isn't Your Hygiene, and Probably Isn't an Infection

Musty, not fishy? Back an hour after your shower? Swabs came back clear? It has a name, and it's on the outer skin.

By the Nourela team · Updated 8th October 2026 ★★★★★ 4.8 from 8,000 reviews
A woman in her 40s takes a selfie in her bathroom, holding up a bar of Japanese Persimmon Soap

In short: Noticed a new, musty smell down there in your 40s or 50s? Back an hour after your shower, or by ten at your desk? Still there after clear swabs and months of HRT? You're not imagining it, and it isn't your hygiene. It's The Nonenal Shift, on the outer skin. Japanese Persimmon Soap is made for it. Its tannins break down what water and plain soap leave behind. Thirty seconds in the shower, and you stop thinking about it. Here's why over 30,000 women have switched.

A woman with a work lanyard steps out of the staff toilets into an office corridor, glancing along it

It's new, it isn't your hygiene, and you're far from the only one.

It usually turns up somewhere in your 40s. You go to the loo at work, pull your knickers down, and catch a smell you've never made in your life. Not fishy. Musty. Stale. A bit like BO.

So you wash more. Twice a day, every crease. And within the hour it's back.

You are not dirty, and you are not on your own. We read what more than 700 women wrote about a new smell down there. They posted on Mumsnet, Reddit and menopause forums. Over and over, they said two things. They wash more than anyone they know. And they thought they were the only one. It's a change in your body, not a failure of your hygiene.

"Every day when I go to the toilet and pull down my pants, I can get a whiff from the crotch of my knickers/pants."Louise P., 47
Over a woman's shoulder in a GP surgery waiting room, her phone shows a text saying her test results are normal

Clear swabs are a clue, not a dead end.

If you've been to the GP about it, there's a good chance they took swabs and they came back clear. No BV. No thrush. Nothing to treat. So you went home with nothing, and you could still smell it.

Here's what nobody tells you: clear swabs are useful. Swabs look for infections. They don't look for what your skin is making. A musty smell with no discharge or itching usually isn't coming from inside at all. It's coming from the skin around it. That's why the BV gel, the thrush cream and the chemist's pH wash didn't touch it. They treat the inside, and the inside was fine.

A normal result on a home pH or BV test points the same way. A swab from your GP is still the surer check.

"I have been tested for BV and yeast many times over the course of this year and they’ve been negative"Ruth K., 46

It has a name: The Nonenal Shift. And it happens on the outer skin.

In your 40s, two things change at once. Both land on the skin around your bikini line.

First, you sweat more, and you sweat there. Hot flushes and night sweats can go on for years. The groin and the creases at the tops of your legs are packed with sweat glands, the same kind as your armpits. Tights, office chairs and the cycle to work trap that sweat all day.

Second, your skin starts making nonenal. It's a musty odour compound that turns up from your 40s. It's oily, not wet, so it clings to skin and to the gusset of your knickers.

Put the two together and you get The Nonenal Shift. That's extra sweat plus an oily residue, sitting on the outer skin. That's why it smells like BO, not like an infection.

"I seem to have noticed a lot of sweating down there. Sometimes when wiping it's almost like BO which is completely gross"Kelly D., 44

Why water, plain soap and intimate washes can't shift it.

No soap down there, just water? That's half a rule. Water is right for the inside, which cleans itself. The outer skin, where you sweat, needs more. Water can't lift an oily residue, any more than it can clean a greasy pan.

So you try a plain, unscented bar. It gets you halfway. It lifts the sweat and some of the oil. But it can't remove the nonenal, and nonenal is what smells. That's why you're clean out of the shower and catch it again within the hour. Only the tannins in Japanese persimmon break it down.

Perfumed intimate washes just cover it for an hour. They also leave fragrance on the most sensitive skin you've got. No wonder so many women say they sting.

"I currently only use water and yet the problem persists."Joanne H., 52
FeaturePersimmon soapWaterPlain soapPerfumed wash
Washes away sweat✓✓✓✓
Breaks down nonenal✓✗✗✗
Removes odour instead of covering it✓✗✗✗
No perfume on intimate skin✓✓✓✗
Made for the change that starts in your 40s✓✗✗✗
See Japanese Persimmon Soap
A bar of Japanese Persimmon Soap held up close, with its box and a bowl of persimmons behind

Japanese persimmon breaks it down.

That's the job Japanese persimmon is made for. Persimmon is packed with tannins. In Japan, it has long been used against body odour. The tannins break down nonenal, so it rinses away with the lather instead of clinging to your skin.

It works by removing odour, not perfuming over it. So when you step out of the shower, you don't smell of fruit. You smell of nothing. There's no added perfume. Just olive oil, coconut oil and glycerin for a creamy lather that doesn't strip.

"I bought persimmon soap because over and over again that’s what people recommend. Guess what? They’re all right! I’ve used it once and the smell is gone."Karen L., 49
Try it for 60 days
A handwritten note on a bathroom windowsill: flushes, ticked; sleep, ticked; the smell down there, underlined, next to a bar of Japanese Persimmon Soap on its bamboo dish

HRT sorted the inside. This does the outer skin.

Lots of women start HRT and feel human again. The flushes ease, the sleep comes back. And the smell down there doesn't move.

That isn't HRT failing. HRT works on your hormones. It can't wash your skin. Keep taking it, and add the bar for the outer skin alongside it. There's nothing hormonal in it, nothing to swallow and nothing to insert.

Is it dry or sore down there, or has sex started to hurt? That's worth a GP appointment of its own. Vaginal oestrogen is often what helps with that, and plenty of women use both.

"I've been on HRT for 3 months and nothings changed in that area"Lorraine P., 51
Add it to your routine
A lathered bar of Japanese Persimmon Soap on a soap dish in the shower next to a phone showing a 30-second timer

30 seconds, outer skin only. Here's exactly how.

  1. Lather.Wet the bar and work up a lather in your hands.
  2. Wash the outer skin.The bikini line, the creases at the tops of your legs and between your cheeks. Leave the lather on for 30 seconds.
  3. Rinse.Rinse well and pat dry. Every morning, and before bed too if night sweats are your problem.

Outer skin only. Use a soapy hand, never a flannel or mesh bag. And never use it inside. Keep plain water for the inside. Try a small patch on your inner arm first. If anything stings, stop.

Won't soap down there give me thrush? It's perfume, scrubbing and washing inside that upset the balance down there. This bar has no added perfume. You use it on the outer skin with your hands, then rinse it off. The inside never sees it.

This isn't a one-off fix. Hot flushes and night sweats last a median of 7.4 years. And the bar only works while you use it. The day you run out is the day it's back. That's why many women choose Subscribe & Save, for an extra 20% off and refills that arrive on their own. Skip, pause or cancel any time.

"I am quite sensitive to soap in that area and I wasn’t dry or itchy afterwards so that was a bonus."Jackie T., 53
See the bundles
A woman in her 40s curled up on the sofa against her husband on a Sunday morning, smiling and relaxed

What it's like when it's gone.

Picture a normal weekday. You shower, get dressed and go. No second shower. No spare knickers in your handbag.

You go to the loo at work and don't brace yourself. You sit right back in your chair in the afternoon meeting. You wear the jeans, or the tights, and forget about it.

At night you get changed and there's nothing there. And in bed, you stop holding back. No more turning away. No more making excuses. You're the one reaching for him again.

You stop thinking about it. That's the whole point.

"I went ahead and tried the persimmon soap and wow! I was skeptical but it actually works. It’s only been 2 days but I’m straight up shocked."Denise W., 48
Get back to normal

60 days to smell the difference, or your money back.

Use it every morning for a few weeks and see for yourself.

Don't feel fresher within 60 days of delivery? Get in touch and we'll refund what you paid for the bars in your first order. You even keep up to two opened bars. Just send back the rest unopened.

The only way to lose is to carry on as you are. The second shower. The spare knickers in your handbag. The edge of the chair.

Choose my bundle

Made it to #9? Then it's time to stop putting up with it.

What customers say.

★★★★★ 4.8 out of 5, from 8,000 reviews

★★★★★

Fine at my desk again

I cycle to work, and by ten I could smell myself on the office chair. Now I wash the creases with this every morning. I get through the afternoon meeting without shifting about.

Nicky
Nicky, 46ReadingVerified buyer
★★★★★

Clean when I leave, still clean at lunch

I was showering twice a day and it was back within the hour. Water just wasn't shifting it. A week with the bar, outside only, and I stopped dreading the loo at work.

Debbie
Debbie, 49NorthamptonVerified buyer
★★★★★

It was my skin all along

Two lots of swabs, both clear, and three tubes of gel I didn't need. Nobody ever said it might just be my skin. Wish I'd known a year ago.

Paula
Paula, 52LeicesterVerified buyer
★★★★★

HRT did the rest. This did the smell.

Six months on HRT. Flushes gone, sleep back, but the smell down there hadn't budged. I use the bar morning and night now and it's the first thing that's touched it.

Tracey
Tracey, 51SheffieldVerified buyer
★★★★★

No itching, no stinging

I was terrified any soap down there would give me thrush. I patch tested, used it on the outside only with my hands, and nothing. Not a twinge.

Mandy
Mandy, 54ExeterVerified buyer
★★★★★

Twenty years of water only

I'd only ever used water down there because that's what we're all told. Turns out that's half the rule. I don't carry spare knickers in my handbag any more.

Gill
Gill, 48NottinghamVerified buyer

Questions.

Is it safe down there? Won't it give me thrush?

On the outer skin, yes: the bikini line, the creases at the tops of your legs and between your cheeks. Use a soapy hand, never a flannel or mesh bag. And never use it inside. The balance that matters is inside, and the inside never sees this bar. It's perfume, scrubbing and washing inside that cause trouble, and this bar has no added perfume. Rinse well and patch test on your inner arm first. If anything stings, stop.

When should I see my GP instead?

If the smell is fishy and comes with discharge, itching, pain or bleeding. If BV or thrush keeps coming back. If it's dry or sore, or sex hurts (ask about vaginal oestrogen). If your wee smells stronger, burns, or you're leaking. If it started with a new coil or comes with your period. If it's sudden and very strong (check for a forgotten tampon). And always if you bleed after your periods have stopped.

My swabs came back clear. Why can I still smell it?

Swabs look for infections. They don't look for what your skin is making. A musty smell with no discharge or itching usually comes from the skin around it, not the inside. That's The Nonenal Shift: extra sweat plus nonenal on the outer skin. It's why the BV gel and the pH wash didn't touch it, and it's what this bar is made for.

Does it work alongside HRT?

Yes. There's nothing hormonal in it, nothing to swallow and nothing to insert. HRT works on your hormones. The bar washes the outer skin. Keep taking your HRT as prescribed, and use the bar alongside it.

Can I use it on the rest of my body?

Yes. Use it anywhere you sweat: your armpits, under your bust, the back of your neck and your feet. Same 30 seconds, then rinse. If you sweat a lot, keep your deodorant for the wetness. The bar deals with the smell.

How soon will I notice a difference?

Everyone's different. Some women notice it after their first few washes. For others it takes a couple of weeks of using it every day. That's why you get 60 days to try it. Not fresher by then? You get your money back.

Does it arrive in plain packaging?

Yes. It comes in a plain parcel with nothing on the outside to say what's inside.

Can I subscribe?

Yes. Tick Subscribe & Save when you choose your bundle for 20% off every order, with refills that arrive on their own. How often depends on your bundle, from every 4 weeks for 2 bars to every 20 weeks for 10. Skip, pause or cancel any time from your account. The 60-day guarantee covers your first order.

How long does delivery take?

Delivery is free across the UK. Orders are packed and dispatched within 1 to 3 business days, then take 7 to 14 business days to reach you. We'll email your tracking number as soon as your order ships.

What if it doesn't work for me?

If you don't feel fresher within 60 days of delivery, email support@nourela.com and we'll refund what you paid for the bars in your first order. Keep up to two opened bars and send back the rest unopened.

None of this was your fault. Your skin changed in your 40s, and nobody told you the rule had changed with it. Water for the inside. Japanese persimmon for the outer skin. Give it 60 days, and find out what a whole day without thinking about it feels like.

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