In Balance Point: Star Wars: The New Jedi Order Book 6, beyond some interesting foreshadowing about Jacen, we learn that hairlessness provides advantages in certain tactical instances such as decontamination procedures. Pg. 142 confirms this:
“We can separate the Vuvrians and Vors,” the voice continued. Hairless folks can zip through a fast irradiation, and we’ll send them on their way.” Jacen curled against the hatch. “Why are you asking me…”
In Traitor: Star Wars: The New Jedi Order Book 13, Jacen Solo by Yuuzhan Vong standards gets to visit a Yuuzhan Vong spa, and experiences the lush extravagance of “the Embrace of Pain” — essentially a brutal torture device to everyone else’s tastes.
But mostly he sits, or lies, waiting. Naked, blood seeping from his wrists and ankles. More than naked: utterly hairless. The living machines that tend to his body also pluck out his hairs. All of them: head, arms, legs, pubis, armpits. Eyebrows. Eyelashes.
After Traitor, did Jacen Solo maintain his plucked grooming habits, particularly after he went down the path to becoming a Dark Lord of the Sith? Was this hairless condition ever again referenced in Legends continuity, or is this something he kept just kinda, sorta between he and Vergere? Was it referenced again in any official reference books, supplements, or his hairlessness reflected in official artwork?
Was Jacen Solo’s lack of body hair during Traitor ever addressed again in Legends?