This support article applies to a previous version of Layer. If you're using the newest version of Layer, some features and navigation described here may look different.
The Mask Selection Tool gives you precise control over which parts of your image you want to modify. Using this tool, you can paint a custom selection area and guide AI to make targeted changes, especially useful for subtle updates like color shifts or detailed refinements.
See how to mask, prompt, and refine your image using AI for accurate edits and visual improvements.
Overview
Mask Selection allows you to "paint" the area you want the AI to affect. This is ideal when you need exact boundaries or want to avoid affecting nearby parts of the image. The mask defines where the AI should apply your prompt, while the rest of the image remains untouched.
How It Works
Select the Mask Selection Tool from the toolbar, paint your selection directly onto the image, enter your prompt, lower the Similarity setting for color changes, and click Forge in Selected Area. Select your preferred result, then click Accept to apply it to your canvas.
Best Practices
Use this tool when working with precise edits, such as adjusting small details or color tones.
CTRL + LMB lets you refine your mask with precision, helping avoid overlap or stray marks.
Lowering Similarity is especially effective for color-based changes.
Combine this with well-phrased prompts to guide the AI effectively.