5 Things Researchers Found About Night Sweats, Midlife Body Odor, and an Oily Compound Most Women Have Never Heard Of

By Edith Thompson

Last updated August 11, 2026

1. After 40, Your Skin Can Start Producing an Odor Compound Your Old Routine Was Never Built For

Researchers identified an age-associated odor compound called 2-nonenal. It forms when fatty acids in the skin’s surface oils break down.

 

That matters because this isn’t simply “more sweat.”

 

It helps explain why you can shower in the morning, feel completely clean…

and smell it again by noon.

2. Most Solutions Mask It, Manage It, or Only Target Your Armpits

Clinical deodorant. Men’s deodorant. Wipes. Acids. Antibacterial washes. Second showers.

 

Different products. Same problem.

 

They either cover the smell, manage it for a few hours, or focus on your armpits.

 

But the odor can show up on your neck, chest, under your breasts, back and collar.

 

Your deodorant was never designed for any of those places.

3. A Hot Night Can Leave an After-Effect Long After the Hot Flash Is Gone 

Night sweats leave your skin warm and damp for hours.

 

By morning, the flash is over.

 

But the sour, oily residue can still be sitting on your skin, pajamas, collar and pillowcase.

 

That’s why the most revealing check often isn’t your armpit.

 

It’s your pillowcase the next morning.

 

YUDO isn’t for the hot flash itself.

 

It’s for what the hot night leaves behind.

4. Japanese Persimmon Tannin Works Differently From Fragrance or Deodorant

Japanese kakishibu persimmon tannin interacts with odor-causing aldehydes such as 2-nonenal.

 

Instead of adding another scent on top…

 

it targets the odor compound so it can be washed away.

 

That’s the difference between:

 

covering the smell

 

and

 

washing it away.

5. The Goal Isn’t to Smell More Fragrant. It’s to Smell Like Nothing.

That’s exactly why YUDO Japanese Persimmon Body Bar was created.

 

Its Japanese kakishibu persimmon tannin helps target age-related odor instead of covering it with another scent.

 

One bar. 30 seconds. Whole body.

 

Wash. Rinse. Smell like nothing.

What Deodorant Can’t Reach, YUDO Was Designed For.

After the Hot Night. Beyond the Armpits.

  • 4.8/5 Excellent Based On 3,798 Reviews

YUDO Japanese Persimmon Body Bar uses Japanese persimmon tannin to target age-related odor at the source instead of simply covering it.

 

One bar. Around 30 seconds a day.


Whole body. Rinse clean. Get on with your day.

 

WASHES AWAY. NOT OVER.

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