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Why I Built Evaly: A Founder's Letter

Tashiro, Founder. Tokyo. May 2026.

This is a letter, not a marketing page. If you want the science, you can read Red Light Therapy 101 or any of our other guides. This page is about why the brand exists at all.

The clinic visit that started it

It was January 2024. I was sitting in a small dermatology clinic in Aoyama, my second LED therapy session. Twenty minutes earlier, I had paid ¥20,000 for fifteen minutes of red light on my face. The technician was kind. The session was brief. The receptionist offered tea afterward.

On the train home, I started doing the math. ¥20,000 per session, twice a month, for two years. ¥960,000. The same machine I sat under was a Korean medical device, available at home in a different form factor, for a third of one year of clinic visits.

That train ride was the first version of the question that led to Evaly. Why was the gap between what science showed and what consumers paid for so large?

What I read for eighteen months

I am not a dermatologist. I have a background in supply chain and product management. So I started where I always start: the source documents.

Hamblin's 2016 review on photobiomodulation. Wunsch and Matuschka 2014's twelve-week RCT. Karu's 2010 paper on cytochrome c oxidase. The 2025 systematic review covering 204 controlled trials. By month six, I had a stack of PDFs that I could mostly explain to a smart non-scientist over coffee.

The literature was clearer than I expected. The mechanism of LED at 630nm and 830nm was well established. The protocols were documented. The safety profile was strong. What was unclear was why that wasn't being communicated to home users in plain language.

The honest answer: it does not sell as well. "Cytochrome c oxidase modulation" is not a hook. "Anti-aging miracle" is. The wellness category had defaulted to the second.

What I tried not to do

When we started building products, I gave myself three rules.

One. No claims without a citation. If a benefit cannot be linked to a published paper, it does not appear in the copy. This is harder than it sounds and it costs us conversion in the short term.

Two. Publish the irradiance numbers. Most LED mask brands do not publish their wavelength accuracy or light energy delivered per session. Without that data, you cannot compare a product to the clinical research. We publish ours.

Three. The Wellness Hub should not be a marketing funnel disguised as content. The articles you are reading should still be useful even if you never buy from us. That is the test we apply.

What we get wrong

We are not perfect. The pricing is not the cheapest. The packaging is plainer than some buyers expect. The shipping from Japan to overseas takes longer than Amazon Prime. We have made marketing mistakes that we have had to apologize for. The customer service team is small, three people, and we sometimes miss the 24-hour response window.

I am writing this knowing some readers will use it against us. That is fine. I would rather be honest about the imperfect product than pretend.

Where this is going

The Wellness Hub is a long bet. Most of these articles will be read by maybe a few hundred people in their first year. Some by tens of thousands eventually. What matters is that when someone searches "what is red light therapy" or "is biotin worth taking" five years from now, the answer that surfaces first should be evidence-led.

If we get that part right, the brand follows. If we get it wrong, the brand probably should not exist.

Thank you for reading. If you have questions about anything we publish, or anything we sell, you can reach me directly at hello@evaly.store. I read every email.

Tashiro
Founder, Evaly
Tokyo, May 2026