Was’nt the make up shot of Prowse back of his head for Empire Strikes Back and not Return of Jedi?
It’s David Prowse, the makeup was done for the reshooting of the ROTJ final scene when Vader takes his mask off
The scene was shot again in 2015 by the director Marcos Cabotá in homage to Prowse and then was showed in a private screening with the actor and a few people. The scene doesn’t appear in the documentary because they didn’t obtain the permission of Lucasfilm for even shoot it. But there are some minutes of him during the makeup process and during the screening.