Refine Edges
Supported by Photoshop
CC 2015.5 and higher
Requirements:
An image needs to be opened
The Refine Edges command lets you display the old Refine Edges dialog for changing a layer mask for selection with the help of various features. The Select and Mask dialog replaced the Refine Edges dialog in Photoshop CC 2015.5, so AdjustShop provides a menu item for running it again.