Here, layers are smart objects.
Right-click on the layer and choose “New Smart Object via Copy,” and then
open the Camera Raw dialog box again by double-clicking the layer icon.
Set the “Clarity” value to -100 and confirm with “OK.” Hold the Alt/
Option key and click on the “Create Layer Mask” button, then use a soft
brush to paint over the optimized skin. Use the opacity slider to control the
amount of retouching.