Zac Efron is one of Hollywood’s most handsome hunks!

He’s always been a picture-perfect, camera-friendly guy. However, beneath the surface, he’s battled a serious issue – addiction.

The 26-year-old actor was reportedly addicted to Ecstasy (MDMA) and cocaine. In April of 2013, the Awkward Moment star shocked fans when he entered rehab to overcome addiction.

Now, he’s speaking out about the dark moments he’s experienced during the past couple years.

According to TMZ, the famed Hair Spray star appeared on NBC’s new reality show, Running Wild with Bear Grylls, where he opened up about his battle with addiction.

He gave a detailed account about the fast life he was living and how quickly he rose to stardom. “It was just so quick — it was shocking,” Efron said about becoming a well-known star after his breakout role in Disney’s High School Musical.

He also discussed the challenges he’s faced with his career. Surprisingly, his hectic, demanding work schedule wasn’t the hard part. The social aspects attributed to his confusion and the downward spiral.

“The challenging part was never the work, that was never it. It was sort of the in-between work — the social aspects outside of it; everywhere you go, and it can be confusing and pretty soon you need a social lubricant.”

Efron revealed how quickly the social aspects of fame and fortune began to consume many facets of his life. “Once it became that, it got to the point where I was caring less about the work and waiting more for the weekend where I couldn’t wait to go out and let loose and have fun,” he admitted. “But when Monday and Tuesday were difficult to get through, I thought, ‘This is bad.'”

Fortunately, he’s doing much better now. The Neighbors actor is finally comfortable in his own skin.

“I just really never again want to take anything from the outside in to feel comfortable in my present skin, and that takes a lot of work,” he said. “It’s just meditation and stopping and slowing down your brain.”

Image via Zac Efron, Facebook