Assassin - The Photoshop: Professional Retouching and Compositing Tips, Tricks, and Techniques - page 518

Figure 11.22
8. Command/Ctrl-click once on the thumbnail of the head channel to load it as a se-
lection ( Figure 11.23 ). Fill this area with white by going to Edit > Fill > Contents
> White, and click OK. Then go Select > Deselect to cancel the active selection.