OG fans of the "Riverdale" heartthrob might know that Cole Sprouse's hair is naturally blonde.
When Sprouse got his start on the Disney Channel's "The Suite Life of Zack and Cody" alongside his twin brother Dylan, his hair was much lighter. He later dyed his hair to play Jughead Jones on "Riverdale."
Sprouse spoke to Glamour in 2017 about his dramatic hair transformation to play Jughead.
"I do it every two weeks or so. It's not bad," he said. "I'm fitting into it a little more. I miss the blond, but people tell my brother and I apart more easily now, so that helps."