The stars of “Carrie” — the latest stage incarnation of Stephen King’s gory high school horror novel — are starting to scare more than just theater audiences. Marin Mazzie and Molly Ranson, the show’s leads, have been freaking out a few West Village residents near the Lucille Lortel Theatre on Christopher Street because the skin of both actresses is so stained from all the fake blood in the show. A rep for the musical said: “The production is aware of the problem and is doing everything it can to find a solution. [Fight director] Rick Sordelet is apparently testing a new [fake blood] formula. No word yet if it washes off, but I hear it does smell like cocoa butter.”