Here are five quick tips for doing retouching in Photoshop that are essential to know. Learn them to do better retouching on your photos.
#1 – Load Luminosity as a SelectionIn Photoshop you can use the luminosity of an image (the bright pixels) as selections. The easiest way to make a selection out of the bright pixels of a photo is by pressing Command+Option+2, (Windows: Ctrl+Alt+2).
If you cannot remember the keyboard shortcut, you can also load luminosity as a selection... more (link is external)