Eraser Tool

The Eraser Tool clears the current layer content.

• In the Toolbox, select the Eraser Tool.
• Choose brush size and style.
• Erase.
• On the Options bar, you may also define the erasing mode, opacity, and flow.
• The Erase to History option allows us to use the Eraser as the History Brush Tool

Tip. Just in case you didn't know, the Eraser tool is also available in Photoshop Elements that is way cheaper version.

And if you believe, Photoshop Elements lacks some other important feature, be sure to visit this page.