How ‘Personalized Sunlight’ Could Revolutionize Wellness as New Device Boosts Vitamin D Without Stepping Outside

A new FDA-cleared wall device promises to deliver the benefits of natural sunlight with minimal UV risk.
By Raven Saunt | August 27, 2026

Key Takeaways

  • Stepping into sunlight provides 90% of our body’s vitamin D, but an estimated 35% of US adults suffer from vitamin D deficiency.
  • A new over-the-counter, FDA-cleared device by Solius promises personalized UVB light therapy in 5-minute weekly sessions with 99% less UV risk than natural sunlight.
  • Experts emphasize that while personalized light devices are effective for boosting vitamin D—especially during winter—they should complement, not replace, real sunlight exposure.
Stepping out into the sunlight can regulate sleep cycles, lower blood pressure, and enhance mental health. Beyond these benefits, sun exposure provides us with 90 percent of our daily vitamin D.
Despite dietary sources like fatty fish and egg yolks, the Cleveland Clinic estimates that 35 percent of adults in the United States suffer from vitamin D deficiency.
“The reasons for this are multifaceted,” explains Dr. Mike Ellis, DO, a licensed internal medicine physician and medical director of Keep Glowing Medical Spa in Tinton Falls, New Jersey. “People are spending less time outdoors and getting less sun exposure now than in the past… as more people spend time indoors or apply a strong SPF to protect against dangerous UV radiation and decrease skin aging.”
Dr. Ellis adds that obesity, poor diet, inflammatory gut conditions, and medications for high cholesterol and weight loss also contribute to reduced vitamin D absorption. Low vitamin D levels can lead to muscle weakness, weak bones, impaired immunity, and mood changes like anxiety and depression.

Solius & Personalized Sunlight Technology

Wellness company Solius has developed a new over-the-counter, FDA-cleared device designed to deliver the health benefits of the sun with 99 percent less total UV risk.
  • How It Works: The device consists of a single slim panel mounted on a wall. Users complete a skin analysis to calculate the precise dose of UVB required.
  • Session Details: Users stand facing away from the panel for 5-minute weekly sessions. Solius notes that a full year of weekly treatments carries less UV exposure risk than five minutes of direct afternoon sun.
  • Biological Impact: Within seconds of UVB light touching the skin, 7-dehydrocholesterol is converted into previtamin D3, which becomes active vitamin D3 over 24 to 48 hours. The process also triggers neurotransmitters, nitric oxide, and hormones that support mood, energy, cognitive health, skin integrity, and gut microbiome balance.

What Experts Say About the $2,995 Device

Health professionals see clear benefits for targeted populations, but caution against treating devices as full replacements for nature.
“Personal sunlight devices can be an effective way to increase vitamin D levels during the winter months or in people who have low vitamin D due to low gut absorption,” says Dr. Ellis. “The Solius device does have the proper UVB light spectrum so could be a good option for those who are deficient.”
However, Dr. Ellis cautions that individuals with a history of skin cancer or those taking photosensitizing medications should avoid using such devices.
Longevity expert Gary Brecka, host of The Ultimate Human podcast, agrees that controlled UVB devices serve a vital purpose for housebound individuals, care facility residents, or those enduring long northern winters. However, he emphasizes that convenience shouldn’t replace real nature: “The problem is thinking a lamp replaces the sun. The device is a refinement, not the foundation.”

Experts Featured

  • Dr. Mike Ellis, DO, Licensed Internal Medicine Physician & Medical Director of Keep Glowing Medical Spa
  • Gary Brecka, Longevity Expert & Host of The Ultimate Human Podcast
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Keep Glowing Medical Spa in Tinton Falls, New Jersey 

Dr. Michael Ellis, DO, is a licensed physician clinically trained in internal medicine. After years of serving as a hospitalist and front-line provider during the COVID-19 pandemic, he

shifted his focus to wellness and aesthetics—helping clients feel healthier, more confident, and comfortable in their own skin. He believes that everyone deserves access to tools that help them feel and look their best. His mission is simple: educate clients on safe and effective treatments, deliver personalized plans tailored to individual needs, and foster a supportive environment where clients feel respected, empowered, and never judged. 

At Keep Glowing, his focus is on combining medical expertise with spa-like comfort—ensuring every client leaves feeling renewed, confident, and cared for. Located just minutes from the Garden State Parkway, our highly qualified, experienced, and dedicated team is ready to greet you with top-notch services. Find out today what makes Keep Glowing Medical Spa the best spa in Monmouth County and get on track to feeling like your best self!

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