--- title: Why is “Increase” not available on the Adjust personalized dose screen? description: Dose “Increase” may be unavailable if you haven’t completed your first session, must have a session at your current dose, or reached your max due to skin response. Reset skin measurement if recovered. --- [Skip to content](https://help.solius.com/faq/why-is-increase-not-available-on-the-adjust-personalized-dose-screen#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. [Using Solius](https://help.solius.com/faq/using-solius?hsLang=en) # Why is “Increase” not available on the Adjust personalized dose screen? The “Increase” dose option may not be available for a few reasons: - Dose adjustments are not enabled until you complete your first therapy. - If you have already increased your dose, you must complete one full therapy at that level before increasing it again. - If you have reported skin pinkness, redness, or irritation, you have reached your maximum recommended dose. For your safety, the app will not allow further increases beyond this level. If your skin has fully recovered and you would like to increase your dose, you may reset your skin measurement in the app. [![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.