Star Trek: 10 Things You Didn't Know About T'Pol
7. It's A Wig
Jolene Blalock had blonde, curly hair while filming Enterprise. Hair designer Michael Moore was adamant that T'Pol, however, would have dark hair, so he decided that she would be given a wig. Stylist Gloria Pasqua Casny was tasked with getting Blalock into the hairpiece every day.
The process would take about thirty minutes, while Blalock's hair was wound and tucked into a cap. The first wig that they tried had a longer look, reminiscent of a mullet. Thankfully, the mullet was cropped shorter. The look going into season one was close to what had been seen on previous Vulcans, though T'Pol's fringe was a little more uneven than Spock or Sarek's had been.
In the third and fourth seasons, her hair began to get a little more 'human', as Moore believed that living around these people would soften T'Pol and allow her rigid discipline to slide a little. The fourth season saw her receive gentle highlights in her wigs, while the strict, almost poker-straight hair from the first couple of years was retired. When it came to In A Mirror, Darkly, they decided to give her a longer wig to create an even bigger difference between her mirror and prime counterparts.