About the Brand
About
First Person is a cognitive performance company building science-backed supplements and functional beverages engineered to maximize immediate cognitive performance while improving brain health over time. It also developed Crystallized Lion's Mane, a proprietary new form of the functional mushroom extract that materially sets its products apart and allows for a seamless integration into daily lives and routines.
Its supplement formulations target specific neurotransmitters to sharpen motivation and focus, support mood and stress management, and promote deep, restorative sleep. Crystallized Lion's Mane is more bioavailable, taste-neutral, and completely water-soluble than conventional extracts. That science powers products like Think Fast, the company's flagship functional coffee, shown to increase mental stamina by 79% and processing speed by 40%, and improve reaction time by 29% in QEEG and IVA-2 testing.
The product line is built to match what your day demands: Think Fast for heightened mental stamina & steady energy, Sunbeam for motivation & focus, Golden Hour for stress-relief and social connection, and Moonlight for restorative sleep. Each formulation is precision-targeted to achieve a specific result, making cognitive performance accessible, effortless, and part of everyday life. And the same R&D that produced Crystallized Lion's Mane and Think Fast is already at work on what's next: new innovations in cognitive performance that, once again, refuse to make people choose between what works and what they actually want to consume.
First Person is a NEXTY Award winner for Best New Supplement (2023) and has been featured in Forbes, Bloomberg, Self, W Magazine, Hypebae, The Quality Edit, and Trendhunter.
Founding Story
A family history that made this personal.
Brothers Chris and Joe Claussen watched their grandfather, a sharp, entrepreneurial mind, slowly disappear to Alzheimer's disease. Then their father followed the same path.
When genetic testing confirmed they both carried ApoE4, the strongest known risk factor gene for Alzheimer's, the question stopped being abstract. It became urgent. Personal. Theirs to answer.
They spent years immersed in the science of cognitive health and brain performance - not looking for comfort, but for interventions they could act on, starting today.
Together with entrepreneur and co-founder Cory Rosenberg, they set out to build a company around that conviction - one designed to make cognitive performance accessible, effortless, and part of everyday life.
Signature Products
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Team & Experts
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Cory Rosenberg is an entrepreneur and co-founder of First Person. He partnered with brothers Chris and Joe Claussen to build the company around a single conviction: that cognitive performance should be accessible, effortless, and part of everyday life. He leads the brand's growth and go-to-market efforts, translating the company's science into products and stories that reach a broad audience.
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Chris Claussen is a co-founder of First Person. With his brother Joe, he watched their grandfather and then their father decline from Alzheimer's disease — and learned through genetic testing that he carries ApoE4, the strongest known genetic risk factor for the disease. That turned brain health from an abstract concern into a personal mission. He spent years immersed in the science of cognitive health and brain performance, focused on interventions people can act on today, and co-founded First Person to make that science accessible and part of everyday life.
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