From our in-lab study in Beijing, February 2026. Self-report from 93 participants, physiological measures from 71. Early signals, not proof of efficacy.read the claims ledger
Interior.
Undercontrol.
You can buy almost anything. Except sleep on demand, calm before the moment that matters, focus when it counts. Those remained outside human control. The last luxury was never an object. It was command over your own interior. We built the one worth having.
02 / The Instrument
Precision-engineered light and sound. A single, exacting instrument.
Each protocol is matched to a moment in the day. The light is cooler by day and warmer at night. You choose the protocol and duration in the app, put on the Mask, and begin.
Clarity and energy first thing, a short session right after waking.
"I stopped reaching for a second coffee. The mornings just start cleaner." Maria · Founding Member
Calm, sustained concentration for the work that matters.
“Ten minutes before deep work and the noise in my head settles. My focus, output and decisions change massively.” Nicolo · Founding Member
Lower the arousal of a demanding day, or the moments before a high-pressure one.
“It’s almost like a post-workout endorphin hit. You’re just calm, and you just feel happy… a totally different state.” Tom · Founding Member
Guide your nervous system toward deep rest.
“I start it as I get into bed and I’m gone before it finishes.” Stephany · Founding Member
Your brain has a rhythm. We work with it.
Your brain continuously produces rhythmic electrical activity: patterns that change as you wake, focus, relax, or drift toward sleep. The Mask delivers light and sound at a steady frequency, engineered to guide your brain’s own rhythms toward it.
Grounded in decades of neuroscience research.
We tune light the way a luthier voices a violin.
A rhythm goes in
Rhythmic light through the mask and matched tones through the headphones, engineered to a target frequency.
The brain follows
Neural entrainment: the brain’s tendency to synchronize its electrical rhythms to an external one, the same reflex that makes you nod along to a beat. Measurable on EEG.
You arrive
A non-pharmacological way to guide your nervous system toward the state you need. No drugs, no prescription.
THE LIMIT
OUT OF THE LAB
THE INSTRUMENT
ANCIENT RHYTHM
THE LAST SOVEREIGNTY
The limit.
Domayn founder Emma Zhang had the training to know the science worked, and the resources to chase any fix on the market. A decade across neuroscience, venture, and investment banking. The kind of access that buys every coach, retreat, supplement, and prescription there is.
And she still hit the one limit none of it could cross: sleep that wouldn’t come, calm that wouldn’t hold, focus she couldn’t summon. The interior was the one area her resources couldn’t enter. She would not accept that. That is where Domayn starts.
Out of the lab.
Entrainment has worked in clinical settings for decades. But it stayed locked there: expensive, ugly, built for researchers, never for people. The research was already showing what it could do. It stayed in the lab anyway.
We took it out. Released carefully, to the right people first.
The instrument.
A reverence for precision. Light tuned to a frequency, tones matched to your brain’s own rhythm. Every protocol built with the care of an instrument, not the theater of a gadget. The Mask holds the same standard: soft to wear, exact to build. We voice light the way a luthier voices a violin.
The ancient rhythm.
For 40,000 years, humans have used rhythm to change their state: drums, chant, firelight, trance, ritual. Every culture, independently, found a way to entrain the brain.
The Mask is the precision-engineered descendant of the oldest human impulse there is.
The last sovereignty.
You can buy almost anything. Except sleep when it matters, calm before the moment that counts, focus on command.
The ultimate luxury was never an object. It was command over your own interior: the last thing money couldn’t buy.
09 / Questions · the essentials.
What is Domayn?
Domayn is a neurotechnology company building the instruments, and the world, for command over your own interior. The name is the idea: a domain is territory you rule, and the interior is the last one worth ruling. The first instrument is the Mask.
What is the Mask?
The Mask is audio-visual neuromodulation: precision-engineered light and sound, delivered through a mask and headphones, that guide your nervous system toward the state you choose: sleep, calm, focus, or rest. In five to fifteen minutes. No drugs. No prescription. Grounded in decades of neuroscience research. Most people feel the shift in a single session.
What does a session feel like?
Most people describe a progressive heaviness and calm, like the moments before sleep, arriving faster than it normally would. Some describe sharper visual clarity afterward, or feeling more grounded and present. In our in-lab Sleep sessions, 76% of participants fell asleep mid-session, in daytime, without trying. It is genuinely hard to describe before you have felt it, which is why we lead with demonstrations rather than explanations.
Is it safe? Is it a medical device?
The Mask is a non-pharmacological, non-invasive consumer wellness product: not a medical device, and not intended to diagnose, treat, cure, or prevent any condition. No prescription is required and there is no dependency risk. As with any light-based device, a small number of people may experience mild, temporary discomfort such as headache or eye strain. If you experience any adverse symptoms during or after use, discontinue use and consult a healthcare professional.
How do I buy it, and how do invite codes work?
The Mask is available only through our website, with an invite code: not on Amazon, not in retail, not through any third party. Codes come through our demo events, our list, and direct outreach from the team. No code yet? Join the waitlist and you will be among the first as we open access. You can also reach us at support@domayn.com.
It’s for you,
or it isn’t.
By invitation. Or patience.
Different nervous systems respond differently, so the Mask isn’t for everyone, and it isn’t trying to be. It’s in limited release, Hong Kong first, by invitation. Join the waitlist and we’ll tell you the moment access opens in your city, or enter your code to begin.