Rated 4.9 •| 18,500 Reviews
Kareishu Soap
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Made in Japan from tannin-rich fermented persimmon (Kakishibu)
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Formulated to help reduce age-related odor, not cover it with fragrance
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Washes odor away before it builds up on clothes and bedding
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Gentle and moisturizing with coconut oil for mature skin
Janet B.
I had no idea about 2-nonenal until my husband commented on washing the pillowcases again. Now I hug the grandkids without that small thought in the back of my mind.
It costs us less to ship together, so we pass the savings straight to you when you buy more!
WARNING: Low Stock Notice
Persimmons for tannin extract are picked green in a short window between July and September, when tannin peaks. The juice ferments for years before it's usable.
One harvest a year. We can't rush either part.
NEXT BATCH SHIPS IN: 3 DAYS
Reserve yours before we sell out again!
TODAY
SOLD OUT
+3 DAYS
95% RESERVED
+2 WEEKS
UPCOMING
Why Regular Soap Can't Fix This
After age 40, your skin produces an oil-based compound called 2-nonenal — the source of "aging odor."
Because it's oil-based, regular soap and water simply can't break it down. No matter how hard you scrub.
Persimmon tannins are the only natural ingredient proven to chemically neutralize nonenal at the molecular level. That's the science behind every bar of Persimmon Tannin Soap.
Think of it like trying to wash grease off a pan with just water. You can scrub all day - the grease clings. You need a degreaser. That's what persimmon tannins do to aging odor.
What customers tell us after using Persimmon Tannin Soap
What customers tell us after using Persimmon Tannin Soap
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would keep using Persimmon Tannin soap as part of their daily routine
0%
said their skin felt softer or less dry than with their previous soap
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found the scent lighter and less perfumed than other deodorizing soaps
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would recommend it to a friend
What makes this bar different
Real persimmon, not perfume
The tannins do the work. A persimmon scent doesn't. Plenty of soaps borrow the word — our full ingredient list is on this page, so you can check theirs against ours.
A bar, not a routine
Nothing to add, nothing to remember. Neck, chest, behind the ears, shoulders, back — while you're already in the shower. One bar, about four weeks.
Two ingredients working together
Persimmon tannins work on odour already on the skin. Green tea slows the next round. Reducing it, not perfuming over it — which is what most "fresh" soaps are doing.
Third-Party Lab Verified
No sulfates, parabens or synthetic fragrance. Full ingredient list on this page — not just the flattering half. 60 days to decide. Keep the bar either way.
Real Stories, Real Results
Some notice a difference in the first week. Others take a month. Here's what customers say in their own words.
"I'm 71 and kept noticing a faint smell that a fresh shower couldn't fix. even with Hibiclens. I was skeptical but desperate. After one use of Persimmon Tannin Soap, the difference was remarkable. The odor is gone and stays gone. Wish I'd found this sooner."
"I'm 67 and don't think I have the smell yet but I vividly remember it from my grandmother's house and her couch. I started using Persimmon Tannin Soap as a precaution. My daughter says I smell wonderful, and I have total peace of mind now."
"My husband is 58, he showers every single day, but he was starting to smell like an old man. I didn't know how to tell him. I just quietly switched his soap… he says his skin feels better than it has in years."
"I care for my 82-year-old mother and was desperate to find something for that lingering smell. I didn't know it was a chemical change.. I thought she just needed more showers. Persimmon Tannin Soap worked within days. She smells fresh and feels dignified."
60-day money-back guarantee included
Fresh, Without the Fuss
From real Japanese persimmon to a routine you already have — here's what makes Persimmon Tannin soap different.
Targets Age-Related Odor
persimmon tannins, not perfume
Kind to Mature Skin
coconut oil, shea butter, hyaluronic acid
Barely Any Scent
won't fight your perfume
Swap One Bar
no sprays, no extra steps
More Than Odor Control. Your Skin Gets Something Too.
Most soaps take something out of your skin. Ours puts something back — tannin-rich Japanese persimmon for age-related odor, plus the kind of moisturizers you'd expect in a face cream, not a bar of soap.
Japanese Persimmon Extract
Tannin-rich Diospyros kaki — helps neutralize the odor compounds behind age-related scent
Coconut Oil & Shea Butter
Moisture for dry, mature skin, so you don't step out feeling tight
Hyaluronic Acid & Collagen
Draws water into the skin and helps keep it soft — the same ingredients as a $40 face cream
Green Tea & Sulfate-Free Base
Antioxidants that help slow new odor forming, in a base that cleans without stripping
What to Expect, Week by Week
Persimmon Tannin Soap replaces the bar you already use. Here's what changes, what takes a little longer, and what you're never going to notice — by design.
Your first shower
- Lather it like any bar — neck, chest, behind the ears, shoulders and back
- A light, clean scent from persimmon and green tea. No heavy perfume
- Skin feels less tight afterward than with most deodorizing soaps
- Nothing new to add. No sprays, no extra steps
Week 1
- The bar becomes routine — this is the whole change to your day
- Most people notice skin feeling softer first. That's the coconut oil, shea butter and hyaluronic acid
- Fabrics that sit against your skin — collars, pillowcases — go through their first wash cycle since the switch
Weeks 2–4
- The routine stops being a decision
- Many customers say this is when someone else pays them a compliment. That's not something you can check yourself — which is why the guarantee runs 60 days, not 14
- Your first bar runs out around week four
Month 2 and beyond
- Most people move to a multi-bar pack here, once they know they'll keep using it
- Six bars is six months. Twelve is a year, with a free bamboo dish and free shipping
- Nothing dramatic happens from here. That's the point — it's one less thing to wonder about
FEEL THE DIFFERENCE
Eliminate aging odor or your money back!
Enjoy 60 days of freedom from aging odor, with less than 1% of customers asking for their money back.
How Persimmon Tannin Soap Compares
Not all persimmon soaps are created equal. And regular soap doesn't even come close.
Why 100,000+ Customers Made the Switch
Eliminates the Source
Persimmon tannins chemically neutralize nonenal - not just mask it
Moisturizes & Nourishes
Moisturizing coconut oil & hyaluronic acid keep skin soft
Prevents Odor Return
Green tea antioxidants help stop new nonenal from forming
Just Swap Your Soap
No new steps. No sprays. No deodorants. Just shower
60-day money-back guarantee included
Frequently Asked Questions
How quickly will I see results?
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Most customers notice the difference after just 1 use! The persimmon tannins work immediately to neutralize nonenal on contact.
For best results, use consistently - many report feeling fresher and more confident within 1-3 days. Unlike regular soap that just cleans the surface, our formula actually breaks down the odor-causing compounds.
How long does each bar last?
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Each bar lasts approximately 4 weeks with daily use - the perfect amount of time to maintain consistent freshness and odor protection.
However, duration may vary based on storage conditions and usage habits. For maximum longevity, store in a well-draining soap dish and allow to dry completely between uses.
Will this dry out my skin?
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Actually, the opposite! Our formula contains coconut oil, hyaluronic acid, and hydrolyzed collagen — premium skincare ingredients that actively moisturize while they cleanse.
Many customers tell us their skin feels softer than it has in years. No harsh sulfates or chemicals.
Why is it more expensive than regular soap?
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Yes, it costs more. It has to. Tannins only work at real concentrations, and Japanese persimmon extract isn't cheap — which is why the $6 versions lean on fragrance and sell you the word. We also formulate with hyaluronic acid and collagen, the kind of thing you'd otherwise buy in a face cream.
About 35 cents a day on the 6-bar, and 60 days to decide.
Is it safe for sensitive skin?
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Yes! Our gentle formula is free from harsh chemicals and synthetic fragrances. The coconut oil and hyaluronic acid actually help moisturize and soothe sensitive, mature skin.
Does it have a strong fragrance?
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No, it has a very mild, natural scent from the persimmon and green tea. It won't compete with your perfume or cologne, and many customers describe it as "clean" or "fresh" without being overpowering.
What makes it different from cheaper persimmon soaps?
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Many persimmon soaps on Amazon contain trace amounts of actual persimmon extract - or none at all.
Our formula uses a high concentration of authentic Japanese persimmon extract in a synergistic blend with green tea, backed by skincare-grade moisturizing ingredients. It's the difference between a product that works and one that's just riding the trend.
When should I use it?
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For best results, use daily during your regular shower or bath. Focus on areas where aging odor tends to accumulate: behind the ears, neck, chest, and back
Can I use it on my face?
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Yes, many customers safely use it as a facial soap. However, if you have specific facial skin concerns, we recommend patch testing first.
What is your return policy?
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We have a 60-Day Money-Back Guarantee. If our persimmon soap doesn’t help with your aging odor concerns, simply contact us within 60 days of your confirmed delivery date and our support team will help you with your refund.
60-day money-back guarantee included
Verified Reviews for our Persimmon Tannin Soap
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Lorraine N.
Reviewed
I enjoy the soap very much! It not only smells great and feels good on my skin, but gives e the confidence I need moving forth with my day!
Reviewed
It's pretty good and I love the scent . I feel fresh and clean all day
Reviewed
My husband and I both love washing with this! The “old person’s odor” is gone! We feel refreshed after each and every shower!
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Lathers well smell great helps my sons irritates skin romimprove
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I absolutely love this soap! It is the creamiest soap I have ever bought or used. It smells amazing and it makes me feel so refreshed.
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After a shower, I feel more confident, without being overpowering of 'soap' and it doesn't dry out your skin!
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Very pleasant to use with a lovely fragrance from the bars Lathers up easily to produce a foam. After rinsing off lather skin felt squeeky as the saying goes squeeky clean. There's no residue left on body.
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I was sceptical. This is my third order!