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Yuka Kurokawa Yuka Kurokawa

Why I Do This — Developer of Trigger Flow (Seiganho)™

My life has always
changed, starting from my face.

Yuka Kurokawa. Kyoto, Japan. Born 1963.
What follows is a record of what happened to one body, and the questions it left me with.

Until I was twenty-two, I was just a girl who loved skincare. At boarding school, we'd fall asleep talking about our skin. That was happiness.

A traffic accident ended that.

I remember eighty-nine facial reconstructive surgeries. The stitches came to over two thousand. A doctor who broke with the conventions of the time took on my reconstruction. My appearance came back.

What fell apart was my body.

As the years went by, something kept festering deep in my face. My posture collapsed, my back curved, and I felt my body aging in fast-forward.

Wherever I went, no one took it seriously. Nothing ever showed up on a test. No name was ever given to it. So nothing was ever done about it, either.

Desperate to put my own body back together, I spent over three thousand dollars learning a Chinese bodywork method. It did nothing at all.

Neither fascia work nor skeletal work ever reached the pain. What was left was the skin.

One day, in the middle of washing my face, I noticed something.

—Wait. My body feels light right now.

That familiar, full-body tightness that always followed washing had disappeared. Sensation was coming back into my skin.

I didn't test a theory. The phenomenon came first.

The temperature and angle of the water. Where the lather sits. The instant a towel touches skin. A motion everyone repeats every single day, with no design behind it at all. There was an answer hiding in it.

Surfactants Temperature Dryness Friction Rinsing External agents Stratum corneum · NVU · capillary loops

Fig. — Inputs accumulating on facial skin, unattended by design

My face came back. My body came back. And then, my youth came back.

Fig. 2 — Age 32 to Age 55

Full-body record at ages 32, 37, 47, and 55
Photos placed side by side at the same scale. The horizontal lines mark the position of the crown and the feet. In my thirties, my head sat forward and my ribcage sagged. As the years went on, my body's axis kept straightening.
Current record

I am sixty-three now. I walk all day in five-inch heels and run around carrying heavy loads. It's a different body from the one that once needed an electric blanket in the middle of summer.

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YEARS IN PRACTICE
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SESSIONS
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REFERENCED PAPERS

But when I told people, no one believed me. I was met, again and again, with looks that said I must be out of my mind—claiming that washing your face could change your health.

In Japanese, this was something I couldn't say.

So I said it in English instead. I only ever posted five videos to YouTube.

Five years have passed. Searching "rejuvenation of body shape," my videos still sit somewhere between first and fifth place, as of August 2026. Some days, all five results are mine.

The view counts aren't high. No crowd came rushing in. What's doing the judging is simply how search works. And still, the content itself has stayed near the top for five years.

That's when it first occurred to me: maybe this has real value after all.

From there, I started reading far more of the scientific literature.

Reading it, I was startled. That facial skin affects the health of the whole body had already been written down—not in one paper, or two, but many.

And yet, that's where it stopped.

The point had been made in the papers, and no one had carried it any further. Out in the real world, the face was still spoken of only as an object of beauty. There was a wide gap between what had been written and what was actually being done.

That's when I decided this had to reach people, no matter what.

The process I went through to change my own body was, in effect, the work of turning that literature into a practical method.

World-class Science

XPRIZE Healthspan

XPRIZE Healthspan

Neurovascular Skin Lab — Founder & Administrator

I registered a research team, Neurovascular Skin Lab, with XPRIZE Healthspan. Treating the stratum corneum as an upstream variable — that is the question I brought with me.

Later, an invitation arrived from the Reagan-Udall Foundation regarding its 2026 Regulatory Science Innovation Award. I submitted an application, which was accepted for review. It remains under evaluation.

What happened in one body is not yet proof. That's exactly why I placed it somewhere it could be tested.

The body doesn't lie.
It only waits to be listened to.

I spent a long time not listening.
This is what I found once I finally did.

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Kyoto, Japan — Independent Researcher

Yuka Kurokawa — Independent Researcher & Practitioner
NEUROVA SKIN LAB — Kyoto, Japan