Charlize Theron is back in action ... she gave fans a glimpse, featuring quite the hair transformation. This week, Charlize took to Instagram and shared some sneak-peeks from filming the sequel ...

This is a shot of Charlize ... was that Theron had a much higher forehead than Kelly. You can't really create a prosthesis to make somebody's head lower, so he deferred to the hair department.

In between takes, the film's hair and makeup ... and Long Shot (2019). Theron is also known for her activism during her time in the limelight, which includes creating The Charlize Theron Africa ...