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Affiliate links · Last verified 2026-05-21 · 🌍 Outside the US? Amazon and eBay will redirect you to your country's local store automatically.
The Story
Circadian rhythms might sound like a good name for a jazz band, but they are actually a highly important aspect of human nature. Controlled by the hypothalamus, circadian rhythm, sometimes referred to as our “inner clock,” is a major factor in how we respond to light and darkness, and signals when it is time to go to sleep or wake up.
The Pitch on Shark Tank
Circadian Optics Light Therapy appeared on Shark Tank (Season 11) in 2019.
Frequently Asked Questions
Is Circadian Optics Light Therapy still in business?
Circadian Optics Light Therapy is still listed on Amazon and eBay — see the buy links below for the latest availability.
Who founded Circadian Optics Light Therapy?
Founder details aren't publicly documented for Circadian Optics Light Therapy.
Did Circadian Optics Light Therapy get a deal on Shark Tank?
Deal details from the original pitch aren't in our records.
Where can I buy Circadian Optics Light Therapy?
Circadian Optics Light Therapy is available on Amazon and eBay. We compare current prices across both at our /results page — link below.
Related from Shark Tank
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