why is it discouraged to use glass on glass?
Asked on 06/12/2025
•@wwdc251 search
It is discouraged to use "glass on glass" because stacking liquid glass elements on top of each other can quickly make the interface feel cluttered and confusing. This can muddy the visual hierarchy and make it difficult for users to focus on the important elements of the UI. Instead, when placing elements on top of liquid glass, it is recommended to use fills, transparency, and vibrancy for the top elements to make them feel like a thin overlay that is part of the material. This approach helps maintain clarity and ensures that the interface remains visually appealing and easy to navigate.
For more details, you can refer to the session Meet Liquid Glass (13:22).
Meet Liquid Glass
Liquid Glass unifies Apple platform design language while providing a more dynamic and expressive user experience. Get to know the design principles of Liquid Glass, explore its core optical and physical properties, and learn where to use it and why.
Build an AppKit app with the new design
Update your AppKit app to take full advantage of the new design system. We’ll dive into key changes to tab views, split views, bars, presentations, search, and controls, and show you how to use Liquid Glass in your custom UI. To get the most out of this video, we recommend first watching “Get to know the new design system” for general design guidance.
Build a UIKit app with the new design
Update your UIKit app to take full advantage of the new design system. We’ll dive into key changes to tab views, split views, bars, presentations, search, and controls, and show you how to use Liquid Glass in your custom UI. To get the most out of this video, we recommend first watching “Get to know the new design system” for general design guidance.