Skin smoother tool works intermittantly

[Denis237041069nwk]

The tool works on some faces and not on others. The message "face is too small" appears. This happens with images from the same shoot. i.e. camera settings and lighting are all the same. Is there a fix or work around for this?

Thank you.

[Glenn 8675309]

It would help if you uploaded some of the images you are having problems with.   Please use the Insert Photos option.