“Halloween II used a new mask.”
Wrong
Correction
The hero mask was reused; extra Kirk masks were also sourced from Don Post.
Dick Warlock wore the same mask Nick Castle used, which Debra Hill confirmed. Separately, illustrator Rick Sternbach found a leftover Don Post Kirk mask in the production office, and Don Post Studios offered a box more in exchange for credit.
What people actually said
“It's our Captain Kirk mask.”