How to pixelate faces

in
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  1. Upload a picture in Photoshop.

  2. Ctrl + J : Create a Copy

  3. Go to filter - pixelate - mosaic. Decide how huge you want the squares, then click OK.

  4. Add a masc and click Ctrl + I. The mask should be black now.

  5. With a white brush one can pixelate the faces now.

The model and the photographer should be content now.