Smith almost always wears very short hair. On his new film, I Am Legend (released: December 2007), Smith plays a brilliant scientist Robert Neville wearing extremely short hairstyle. It is different with common mad scientists look which wear messy long hairstyles such as Einstein. He cuts his hair short very close to the scalp all around his head:
This smart and tidy hairstyle is very easy to manage and is great for extremely curly and thick hair. Will’s sides have been kept short and length has been left through his top section to create great shape around his face.