Smooth skin automatically

Open a photo in Photoshop Elements.

Choose Enhance > Smooth Skin. 

In the Smooth Skin dialog box, the face in your photo is automatically selected.

If the photo includes more than one face, all detected faces are highlighted. Click the face you'd like to adjust.

Drag the Smoothness slider to achieve the effect you want. 

(Optional) Use the Before/After toggle button to review the changes.

(Optional) Click Reset to return to the unedited photo.

Once you're happy with the result, click OK.