Lichen Air makes your air visible.
Since trying Lichen Air I’ve been truly amazed at how quiet yet incredibly powerful this machine is- giving REAL TIME diagnostics on your air quality.
— Anna Kaiser
Discover
The air purifier designed for brain health, sleep optimization, and overall wellness.
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Free shipping · 30-day trial
Enjoy Lichen Air at home, and return it for a full refund if you don't love it
Free shipping with no-cost, hassle-free returns
Peace of mind with our comprehensive 2-year manufacturer warranty
Research shows your indoor air can be 2 to 5 times more polluted than outdoor air. But because you can't see it, you don't think about it.
Every day, your home fills with microscopic particles known as PM 2.5. Small enough to enter your bloodstream and reach your brain, they don't just affect your lungs — they affect how you think, sleep, and feel.
Your daily routine is creating PM2.5 without you knowing
Frying, grilling, high heat
Smoke and combustion particles
Everyday buildup in your home
Often hidden, always airborne
Enters through windows and doors
Even in a clean-looking home, your air may not be clean.
99.995%
particle capture rate
Dual HEPA 14 and activated carbon filters capture 99.995% of airborne particles down to 0.3μm — including PM2.5, allergens, mold spores, and other pollutants linked to brain performance.
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Most air purifiers rely on marketing-created filter terms or ionizers that can do more harm than good.
• Free shipping • 30-day trial
24 dB
whisper-quiet operation
At just 24 dB on the lowest setting, Lichen Air is quieter than a whisper. Sleep mode dims all lights and optimizes airflow to promote better sleep.
Built-in laser particle sensor provides live PM2.5 readings with an intuitive color-coded LED ring. Know your air quality at a glance — green means your air purifier is doing its job!
verified by
Live
PM2.5 monitoring
Independent certification is rare in this industry. We’re proudly verified by one of the few labs that truly test performance
You can't optimize what you can't measure. Real-time feedback turns air quality from invisible to actionable.
~700 sq ft
room coverage
Small, on-table purifiers can’t move or clean enough air to make a real impact — that’s why we built ours bigger. Independently verified to clean spaces up to ~700 sq ft.
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I wanted something powerful enough for a large room but elegant enough for a bedroom. That's exactly what we built.
New York Times bestselling author, brain health researcher, global health educator
"You can't control everything but you can dramatically improve your air, helping protect your brain wellness each day."
Get Science-Backed Updates from Dr. Austin Perlmutter.
300K+ Followers
As Featured In
The New York Times
The Wall Street Journal
NPR
PBS
Darshan Shah, MD
Health and Longevity Expert Founder & CEO, Next Health
Darshan Shah, MD
@drdarshanshah
Clean air is key to longevity. Lichen Air brings powerful HEPA 14 technology to your home, so every day is a vote for a longer, healthier life.
Featured on Instagram
Anna Kaiser
Celebrity fitness professional, choreographer, and entrepreneur.
Anna Kaiser
@theannakaiser
"Since trying Lichen Air, I’ve been truly amazed at how quiet yet incredibly powerful this machine is- giving REAL TIME diagnostics on your air quality and the automatic ability to adjust purification accordingly."
Featured on Instagram
Louisa Nicola
Neurophysiologist and brain health expert
Founder of Neuro Athletics
Louisa Nicola
@louisanicola_
"Air quality is one of the most important variables that shapes brain health and cognitive performance. Lichen Air's HEPA 14 purifier is an amazing evidence-based tool for better air right now."
Featured on Instagram
David Perlmutter, MD
Board-certified neurologist and New York Times bestselling author
David Perlmutter
@davidperlmutter
"I have been involved with Lichen Air from the start. Clean air is essential to brain health and far too often overlooked. This is the exact air purifier I use in my home!"
Featured on Instagram
Elisa Song, MD
@healthykids_happykids
“As a pediatrician, I see just how much poor air quality can impact kids' wellbeing. The Lichen Air Purifier is an excellent way to remove some of the most concerning air pollutants in our homes, offices and schools.”
Featured on Instagram
Shawn Wells MPH, LDN, RD, CISSN, FISSN
Shawn Wells
@shawnwells
“Air is a continuous biological signal to the body, and most indoor environments carry far more particulate load than we realize. Lichen Air uses HEPA-14 filtration at a level that meaningfully reduces that burden. I’ve never experienced indoor air this clean. It’s not just noticeable, it’s foundational. This is the highest level of air quality I’ve seen made practical for the home.”
Featured on Instagram
These health experts reach over a million of health-conscious individuals who prioritize brain health, longevity, and performance.
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