Star Trek: Enterprise S00 E46 Westmore's Aliens: Creating Dr. Phlox and Beyond

"The future is closer than you think."

Michael Westmore talks about evolving Jolene Blalock's look towards a more standard Vulcan look by season four. Of the main characters, he created the look of Dr. Phlox last using some broad strokes from work done for aliens on past shows. This process turned out to be protracted because the producers would not make a decision.