How is Solius different from vitamin D supplements?

Solius activates your body's natural vitamin D production through light, unlike pills that depend on digestion and can fail for those with malabsorption challenges. Rather than relying on the liver and kidneys to process supplements, the light process takes place directly in the skin, where vitamin D is meant to be produced. Because it follows the body's natural pathway, light-based vitamin D production is self-regulating and balanced, helping your body create exactly what it needs. In a published clinical study (Shirvani & Holick, Anticancer Research 2025), Solius produced an average increase of 10.2 ng/mL in serum vitamin D – equivalent to approximately 1,000 IU/day of oral supplementation.

Vitamin D created naturally through light exposure lasts longer in the body and supports broader biological processes tied to mood, immunity, and metabolic balance. Beyond vitamin D, UVB light also helps activate other light-related biological pathways that supplements cannot reach, supporting whole-body health, vitality, and overall well-being. It’s a more complete and naturally aligned way to support your health from the inside out– and unlike supplements, Solius is FDA-cleared.

Many sunlight-associated health benefits do not appear when people simply take supplements. This suggests vitamin D levels may not be the primary mechanism, but rather a biomarker for actual UVB light exposure – it is simply the most studied hormone that we know is produced by the sun. The skin synthesizes over a dozen compounds when exposed to sunlight, an entire process skipped by supplements. This is a relatively new area of science where new learnings shape our understanding of sunlight – and how we can benefit from it – every day.