--- title: How does Solius safely dose targeted sunlight benefits? description: Solius uses a targeted UVB spectrum and personalized dosing to deliver benefits. It focuses on key wavelengths and adjusts exposure based on your skin to maximize benefit while minimizing risk. --- [Skip to content](https://help.solius.com/faq/how-does-solius-safely-dose-targeted-sunlight-benefits#main-content) [![sol-logo-primary-rgb-reg-black - email small](https://help.solius.com/hs-fs/hubfs/sol-logo-primary-rgb-reg-black%20-%20email%20small.png?width=148&height=30&name=sol-logo-primary-rgb-reg-black%20-%20email%20small.png)](https://solius.com?hsLang=en) - [Get Started](https://www.solius.com/get-started) - [User Manual](https://www.solius.com/user-manual) - [Clinical Research](https://www.solius.com/research) - [Contact Us](https://www.solius.com/contact) Open main navigation Close main navigation - [Get Started](https://www.solius.com/get-started) - [User Manual](https://www.solius.com/user-manual) - [Clinical Research](https://www.solius.com/research) - [Contact Us](https://www.solius.com/contact) How can we help you? - There are no suggestions because the search field is empty. 1. [Solius Knowledgebase](https://help.solius.com/faq?hsLang=en) 2. [Solius Technology](https://help.solius.com/faq/solius-technology?hsLang=en) # How does Solius safely dose targeted sunlight benefits? Solius delivers the health benefits of sunlight through two core innovations: a highly targeted UVB spectrum and a personalized dosing system designed to maximize benefit while minimizing risk. **Precise Spectrum** In natural sunlight, UVB makes up less than 1% of total solar radiation reaching the Earth’s surface, yet it is responsible for key biological effects such as vitamin D production. The majority of UV exposure is UVA, which contributes little to these benefits while driving much of the long-term skin damage associated with sun exposure. Solius is engineered to concentrate its output almost entirely within the biologically active UVB range, with a targeted peak of 293 nm. By isolating the wavelengths most responsible for beneficial effects and eliminating nearly all unnecessary radiation, Solius delivers a highly efficient signal with dramatically reduced total UV exposure. **Personalized Dosing** Solius pairs this targeted spectrum with a personalized dosing system that adapts to your skin. Before your first session, the Solius app collects information about your skin history, and the device measures your skin using an integrated sensor. Based on this data, Solius calculates a conservative starting dose, typically around 40% of your estimated maximum safe exposure. This dosing approach is grounded in established dermatology principles and informed by skin response data from nearly 10,000 individuals across a wide range of skin types. After each session, Solius continues to adjust based on your skin’s response. If you report prolonged redness or irritation, your dose is automatically reduced to prevent overexposure. If your skin tolerates the session well, you can gradually increase exposure in controlled increments, following clinically established guidelines. By combining a precise UVB spectrum with adaptive, feedback-driven dosing, Solius delivers the benefits of sunlight in a controlled, measurable, and significantly lower-risk way than natural sun exposure. [![Group 3-2](https://help.solius.com/hs-fs/hubfs/Group%203-2.png?width=195&height=50&name=Group%203-2.png "Group 3-2")](https://www.solius.com?hsLang=en) Solius is an FDA-cleared over-the-counter (OTC) UVB light panel intended to stimulate production of vitamin D in people 22 years and older. Solius is clinically proven to stimulate the production of vitamin D. References to the benefits of sunlight, UVB light, and vitamin D are based upon published, peer-reviewed research. The Solius device is not intended to diagnose, treat, cure, or prevent disease, except for the indications for use described in the user manual for your applicable region. Solius does not provide specific medical advice to users. Users should seek advice from a qualified physician or healthcare provider. This website does not establish a doctor-patient relationship. For detailed product information please consult the User Manual prior to use. Solius® is a registered trademark of Solius Labs, Inc., 100 Ravine Lane NE, Suite 310, Bainbridge Island, WA 98110 © 2026 Solius Labs, Inc.