Mark-Paul Gosselaar: I Dyed My Hair Blonde Constantly for 'Saved By the Bell'

PHOTO: Actor Mark-Paul Gosselaar attends Junior Chef Academy With Sandra Lee at The Washbow in this July 15, 2014, file photo in Culver City, Calif.PlayImeh Akpanudosen/Getty Images
WATCH Mark-Paul Gosselaar's 'Saved by the Bell' Hair Secret

Mark-Paul Gosselaar first rose to fame as blonde-haired teen Zack Morris in the popular sitcom, "Saved By the Bell."

However, a lot of work went into making him look like that: He dyed his dark hair blonde for every episode.

"People go, 'Wow! You're not blonde anymore,'" Gosselaar said during an appearance on "Live with Kelly & Michael." "When was I ever blonde? That's not real!"

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PHOTO: Mark-Paul Gosselaar as Zachary Zack Morris is seen in this undated file image. Paul Drinkwater/NBCU Photo Bank via Getty Images
Mark-Paul Gosselaar as Zachary 'Zack' Morris is seen in this undated file image.

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Gosselaar, 40, now starring in the TNT series "Franklin & Bash," said that while he's glad to have maintained a friendship with his former co-star Elizabeth Berkley, he's not sad that his constant trips to the hairdresser are done. In fact, he marvels that after "putting toxins on [my] hair for six years," that he hasn't gone bald.

"I can't believe I have hair now," he said. "I did that... [and] it wasn't natural."