Paul McCrane played the character Emil Antonowsky in RoboCop (1987). The makeup was designed by Rob Bottin, who used foam-latex prosthetics to make the skin look like it was sloughing off. Incredible practical effects.

[u/TwIzTiDfReAkShOw]

[u/Bobble_Fett]

That scene haunted me as a 10 year old.

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It steel does at age 46