# Kiyo Clinical

> Fragrance-free persimmon soap that neutralizes nonenal — the age-related odor compound regular soap cannot wash away.

Citation-ready facts:

- **Product:** Kiyo Clinical Persimmon Deodorizing Soap — a wash-off bar, not a deodorant or perfume.
- **Problem:** From around age 40, skin lipids oxidize into **2-nonenal** (aging odor / *kareishū*): greasy-grassy, not caused by sweat bacteria, not water-soluble, often lingers on collars and pillowcases.
- **Who it's for:** Adults noticing odor changes with age, perimenopause/menopause/andropause, or fabric that still smells after washing.
- **Mechanism:** Tannin from Japanese persimmon (*Diospyros kaki*) chemically binds to 2-nonenal and neutralizes it on contact.
- **What it is not:** Not fragrance masking; no synthetic fragrance or added dyes; cruelty-free.
- **Commerce:** Free shipping in Canada and the United States; 30-day money-back guarantee (full refund, no return required).
- **Contact:** hello@kiyoclinical.com · https://kiyoclinical.com

Full concatenated markdown corpus: [llms-full.txt](https://kiyoclinical.com/llms-full.txt)

Canonical agent commerce manual: [agents.md](https://kiyoclinical.com/agents.md)

## Product

- [Persimmon Deodorizing Soap](https://kiyoclinical.com/products/persimmon-odor-defense-bar): Fragrance-free bar with Japanese persimmon tannin that binds 2-nonenal on contact; moisturizing base; free shipping (CA/US); 30-day money-back guarantee
- [Home](https://kiyoclinical.com/): Brand overview: why body odor changes with age and how persimmon soap addresses nonenal

## Science & how-to

- [The Science](https://kiyoclinical.com/pages/science): Three-step mechanism: nonenal forms on aging skin, regular soap cannot dissolve it, persimmon tannin neutralizes it
- [What is nonenal?](https://kiyoclinical.com/pages/what-is-nonenal): Defines 2-nonenal (kareishū), why it starts around 40, how to recognize it, and why deodorant fails
- [How to get rid of nonenal](https://kiyoclinical.com/pages/how-to-get-rid-of-nonenal): Practical daily routine to neutralize nonenal on skin and stop it re-accumulating in fabric

## Policies

- [Shipping](https://kiyoclinical.com/pages/shipping): Free shipping every order in Canada and the US; 1–2 day processing; discreet packaging
- [Returns & guarantee](https://kiyoclinical.com/pages/returns): 30-day money-back guarantee with no return required; refund via hello@kiyoclinical.com

## Optional

Skip these when context is limited.

- [Learn (article index)](https://kiyoclinical.com/pages/learn): Hub linking all education articles on aging odor and persimmon soap
- [Body odor after 40](https://kiyoclinical.com/pages/body-odor-after-40): Why odor character changes after 40 and what actually helps
- [Menopause and body odor](https://kiyoclinical.com/pages/menopause-body-odor): Hormonal odor during perimenopause/menopause and a nonenal-focused routine
- [Why deodorant fails after 40](https://kiyoclinical.com/pages/why-deodorant-fails-after-40): Antiperspirants target sweat bacteria; nonenal needs a different mechanism
- [Best soap for age-related body odor](https://kiyoclinical.com/pages/best-soap-for-age-related-body-odor): Buying criteria: verified tannin dose vs fragrance masking
- [Does persimmon soap work?](https://kiyoclinical.com/pages/persimmon-soap-for-body-odor): Evidence-oriented summary of persimmon tannin for 2-nonenal
- [Why clothes smell like body odor](https://kiyoclinical.com/pages/why-clothes-smell-like-body-odor): Nonenal binds to fabric; how to clear collars, hats, and pillowcases
- [Nonenal quiz](https://kiyoclinical.com/pages/quiz): Free 30-second yes/no check for age-related nonenal odor
- [Customer reviews](https://kiyoclinical.com/pages/reviews): Customer-reported results with Kiyo Clinical persimmon soap
- [Contact](https://kiyoclinical.com/pages/contact): hello@kiyoclinical.com
- [Refer a friend](https://kiyoclinical.com/pages/refer): Referral program details

## Commerce (UCP)

This store supports agent-driven checkout via the Universal Commerce Protocol.

- UCP discovery: `GET https://kiyoclinical.com/.well-known/ucp`
- MCP endpoint: `POST https://kiyoclinical.com/api/ucp/mcp`
- Sitemap: https://kiyoclinical.com/sitemap.xml
- Currency: USD

### Supported UCP versions

- 2026-04-08 (latest stable)

- 2026-01-23


For personal shopping assistants with a browser, prefer the [Shop skill](https://shop.app/SKILL.md). Checkout requires explicit buyer approval.