 FAIR: In _Terminator, The (1984)_ (qv) the Terminator comes through  the time port and his hair is that of the "molding" of all  Terminators. But in T2 when the Terminator comes out of the time  "bubble" his hair is the same as after the car wreck scene in the  first movie when he puts on the glasses. John may have modified him  to look more acceptable to Sarah.