"I tried every deodorant on the shelf, two showers a day, the lot. But this soap was different. Three weeks in with the Rhóms bar and my husband mentioned, completely out of the blue, that the bedroom smelt different. He didn't even know I'd switched anything."
— Margaret, Yorkshire · Verified Customer
You've Tried Everything. The Reason It Didn't Work Has Nothing To Do With Hygiene.
More showers, stronger soap, a new deodorant — the obvious moves quietly stopped working somewhere after 40. There's a chemical reason for that, and once you know it, the fix is simple.
Why Regular Soap Stops Working After 40
Your skin chemistry shifts
Around your forties, sebum composition changes. The body begins producing a fatty compound called 2-nonenal — first identified by Japanese researchers at Shiseido in 2001 — which is responsible for the distinct scent most people associate with older skin.
Regular soap can't reach it
Nonenal is oil-based. The soaps and body washes on your shelf are designed to lift water-soluble dirt and surface sweat. They miss nonenal entirely — which is why no amount of scrubbing or double-showering makes a lasting difference.
It clings instead of rinsing away
The nonenal that doesn't get washed off binds to fabric, hair, and pillowcases — anywhere it can hold on. It isn't a hygiene failure. It's a tool mismatch. The good news: there's a known answer for it.
A 1,000-Year-Old Answer From Japan
Long before there was a name for the molecule, there was a name for the smell. In Japanese it's called kareishū (加齢臭) — literally "aging scent" — and it's discussed openly across generations, the way the West talks about grey hair.
The traditional remedy is kakishibu: fermented persimmon extract, used for centuries in samurai garments, monk robes, and the daily bathing rituals of Japan's onsen culture.
"Persimmon tannin doesn't perfume nonenal, and it doesn't mask it. It chemically dismantles it."
The Rhóms bar is built on that same principle, made with the same grade of fermented kakishibu used in Japanese specialty soaps that retail for £30 and up.
60-day refund · Authentic kakishibu · UK customer support
What's Actually In The Bar
Three working ingredients, in concentrations that actually do the job. Most "persimmon soaps" you'll find on Amazon contain less than 1% extract — essentially regular soap with a persimmon-scented label. Rhóms isn't that.
Fermented Persimmon Tannin (Kakishibu)
The active. Sourced from Japanese persimmon harvests, fermented over months to produce the high-tannin extract that binds and breaks down nonenal on contact.
Green Tea Catechins
A supporting antioxidant that works on the same oxidation pathway as nonenal, helping prevent fresh nonenal from forming throughout the day.
Shea Butter & Olive Oil Base
Keeps the bar gentle enough for daily use on mature skin, including the face. No sulphates, no parabens, no synthetic fragrance, no skin-stripping detergents.
Try It For 60 Days. If It Doesn't Work, We'll Refund You.
Use it daily for up to 60 days. If you don't notice the change in how you smell — or, more honestly, in how the people around you respond to you — email us at info@rhoms.com and we'll refund the full purchase. No interrogation, no return shipping, no fine print.
Questions People Ask Before Their First Order
Customer Reviews
4.8/5
From 847 verified reviews
Diane W.
✔ Verified3 weeks ago
I'd been quietly avoiding hugs for nearly a year. Bought one bar to try and ended up reordering before I'd finished it. Whatever's in this — it works. My grandson actually fell asleep on my shoulder last Sunday. He hasn't done that since he was four.
Pauline M.
✔ Verified1 month ago
Honestly thought this was going to be another expensive disappointment. It's not. The bar is small but lasts about three weeks if you treat it properly. I'm on my fourth one. My husband, who notices nothing, mentioned it.
Geoffrey H.
✔ Verified2 months ago
Bought it for my wife. She didn't ask for it which created a slightly awkward moment but she's been using it for six weeks and the result speaks for itself. We're both on it now. Four stars only because I do think the price is on the steeper side.
Susan T.
✔ Verified1 month ago
I'm a carer for my mother who is 81. The smell had become something we both pretended wasn't there. After about ten days of using this on her, my sister visited and said "something's different." She didn't know what. That was enough for me.
Margaret K.
✔ Verified5 weeks ago
Was sceptical because of the price compared to a Boots own-brand. But I've worked through three bars now and I won't be going back. The skin on my chest and back feels softer too which I wasn't expecting.
Liz F.
✔ Verified2 weeks ago
Quick note for anyone wondering — keep it OUT of the shower stream. I left mine in the puddle on the soap dish for the first week and it dissolved twice as fast. On a draining tray it lasts properly. Other than that, no notes. It does what it says.
Catherine D.
✔ Verified6 weeks ago
Took me about two and a half weeks to notice. I was about to give up and then suddenly realised I'd stopped checking my collar in the lift. The product works, it just isn't as immediate as the marketing suggests for everyone. Be patient with it.
Anne B.
✔ Verified3 days ago
Reordering. That's my review.
David P.
✔ Verified1 month ago
My partner bought me this. I will admit I was offended for about five minutes. I am no longer offended. I am ordering more.