He's aged better than Robert Beltram- anyway make-up can do anything.
The trick where Echeb can remove his cortical node had to do with genetic sequencing. His body lost the ability to continue without implants because of the cortical node. If it was removed, then he was vibrant enough to regrow his cerebral tissue. His re-sequencing came as a result of fluids and cerebral scanning.
Today he looks normal.