How Do I Blur the Face on a Photo?
- 1). Launch Photoshop. Scroll to "File" and then "Open." Choose a photo and click "Open."
- 2). Scroll to the "Toolbar" on the left side of your screen. Choose the "Rectangle Marquee Tool" or click "M" on your keyboard. Create a box over the person's face and halfway between the neck area.
- 3). Scroll to "Filter" and then "Pixelate." Click "Mosaic." A window will appear. Adjust the "Cell Size" to the desired look that you wish to blur the face and then click "OK." Save the file under a new name so as not to save over the original.
Source...