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Journal

Slow notes from a small studio.

Longer thoughts on ingredients, ritual, sourcing, and the quiet business of making one bar of soap the right way. New posts every few weeks.

How persimmon tannin actually neutralizes body odor
科学Science

How persimmon tannin actually neutralizes body odor

The molecule behind body odor is called nonenal. Tannin binds to it and takes it out of play. Here's what that looks like at the microscopic level.

June 12, 2026 · 6 min read
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The 8-minute morning: how to build a shower routine that resets you
儀式Ritual

The 8-minute morning: how to build a shower routine that resets you

A routine isn't a checklist. It's a shape you can return to on the days you don't have the energy to think.

May 28, 2026 · 4 min read
Where our persimmon leaf comes from
産地Sourcing

Where our persimmon leaf comes from

A visit to the Gifu orchard that grows every leaf that eventually ends up in a Kakinoha bar.

May 3, 2026 · 5 min read
Why we don't use 'natural fragrance'
透明性Transparency

Why we don't use 'natural fragrance'

It's a legal shortcut, not an ingredient. If you can smell something in our bar, it came from a plant we listed.

April 15, 2026 · 3 min read
Kakishibu: a 700-year-old odor solution
文化Culture

Kakishibu: a 700-year-old odor solution

Fermented persimmon has been used in Japan since the Heian era. What happened, and what we can learn from it.

March 22, 2026 · 7 min read
On staying small: why we cap production
経営Studio

On staying small: why we cap production

We could triple output tomorrow. We won't. Here's the reasoning, laid out honestly.

March 1, 2026 · 4 min read
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