Solius Labs

What it does

Solius Labs offers the Solius Pro, an FDA-cleared Class II medical device that delivers personalized UVB light therapy at home. The device scans the user's skin to determine an optimal UVB dose, then delivers it in approximately five minutes once a week. It is controlled via a smartphone app that guides the user through a skin analysis and session setup. The company claims the device provides 12 times the UVB health benefits of natural sunlight per minute, with 99% less total UV radiation risk compared to a full year of weekly sessions versus five minutes of midday sun.

Who it is for

Solius is designed for individuals seeking the health benefits of sunlight—such as vitamin D production, improved mood, bone health, and immune support—without the risks of UV damage from the sun or tanning beds. It is positioned as an alternative to vitamin D supplements for those with malabsorption issues or who want a more natural approach. The device is over-the-counter, meaning no prescription is needed, and is intended for both home and professional use.

Why it matters

Vitamin D deficiency is widespread, and many people cannot get enough sun exposure due to geography, lifestyle, or skin sensitivity. Solius offers a controlled, consistent way to produce vitamin D naturally, which may have advantages over oral supplements. The company cites a published study (Shirvani & Holick, Anticancer Research 2025) showing an average 10.2 ng/mL increase in serum vitamin D (76% mean individual change). Beyond vitamin D, UVB light may activate other biological pathways—such as nitric oxide release and microbiome diversity—that supplements cannot replicate. The FDA clearance adds credibility, as it is the only UVB device cleared for over-the-counter use.

Launch signal

Solius Labs has raised $23M in Series A funding, indicating strong investor confidence. The company has a Scientific and Medical Advisory Board including Harvard Medical School professors in dermatology, cardiology, and psychiatry. The device is available for purchase at $2,995, and the company has published clinical research supporting its efficacy. The website emphasizes FDA clearance and a partnership with Boston University for independent research.

Brand and naming

The name "Solius" combines "sol" (sun) with a suffix suggesting "more" or "superior," positioning the product as an enhanced version of sunlight. The tagline "precision sunlight" reinforces the idea of controlled, optimized exposure. The brand targets health-conscious consumers who are wary of sun damage but want the benefits of UVB. The professional design and high price point signal a premium medical device rather than a consumer gadget.