One time, I styled the hair for a famous actor in a Russian movie. I created the hairstyle and simulated hair growth from a bald head. You can see the draft scene and the final version in the film or elsewhere.
I received the wig from the shoot and recreated a similar hairstyle for the character. My task was to simulate hair growth within the hairstyle and ensure realistic hair interaction with two live actors.
The renders in the pictures were made for my personal portfolio. The production rendering was done by someone else.