First, a person's face is tracked, moved, examined and rotated, and then applied to an empty object.

Then create a new adjustment layer and add it to the adjustment layer in the search liquefaction function of animation and special effects panel.

The liquefaction function of AE is similar to that of PS, so if you can liquefy PS, you should know how to operate it (AE liquefaction adjusts the brush size by holding down Ctrl+ the left mouse button to push and pull).

Link the "distorted mesh displacement" to the "position" attribute of an empty object after liquefaction? At this point, you have completed the task.

You can set the key frame of the distortion percentage and lower it appropriately at the time point when liquefaction is not needed.

(Video Tutorial >> Network Link)