Entertainment

Poison Penn

Trick or treat. It’s Sean Penn, and he’s dressed as though he’d like some candy, please.

For his new film “This Must Be the Place,” opening Friday, Penn’s character takes visual inspiration from the Cure’s frontman, Robert Smith. Penn plays an aging rock star who travels from Ireland to America in search of a former Nazi officer who persecuted Penn’s late father.

The Post spoke with the film’s hair department head Kim Santantonio about the actor’s unique look.

* “The director, Paolo Sorrentino, has a hair stylist in Italy who had some wigs made. I dyed them black and styled them in that weird look, where the base is all teased and it’s [messy] all over the place. It’s basically the Cure and that Goth look. I used Goldwell black level one, which is the darkest dye they have.”

* “The wig is made from human hair. They’re expensive. They can be up to $8,000 per wig.”

“Sean liked the look. He jumped in and went for it. He would never wear it off the set. At the end of the day, he would take off the wig, clean up and walk out of that trailer looking like himself.”

* “If you want to go as him for Halloween, go to a make-up store and get white makeup for the face, black eyeliner and red lipstick and just get a bad black wig and tease it up as much as you can.”