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"It: Chapter 2" is definitely not for the squeamish. As star Jessica Chastain told Jimmy Fallon during a recent "Tonight Show" appearance, "It's scary, man."

There's one scene, in particular, that will likely terrify moviegoers. Chastain debated whether or not she was allowed to share this factoid -- and then went ahead and did it. She told Fallon that someone on set said there's the "most blood that's ever been in a horror film scene."

The fake blood was so copious that Chastain was still finding it on her the next day. She recounted how she was finding it in her eyeballs. Yuck.

Watch below, starting around the 2:15-mark.



"It: Chapter Two" is the sequel to 2017's "It," and both are based on the 1986 novel "It" by Stephen King. "Chapter Two" picks up more than two-and-a-half decades after the first film, with Bill Skarsgård reprising his role as Pennywise and Chastain, James McAvoy, Bill Hader, Isaiah Mustafa, Jay Ryan, James Ransone, and Teach Grant playing grown-up versions of the members of The Losers Club.

"It: Chapter Two" is directed by Andy Muschietti and hits theaters Sept. 6.