Yoo Ah In, the main star of 'Hellbound,' recently admitted that his long hair in the smash hit series was a wig.

Netflix Korea recently released an interview with the actor in which he delivered candid answers to questions based on keywords connected to him.

The keyword 'long hair' appeared in the video because Yoo Ah In, the founder of the pseudo-religion The New Truth, had his hair long. He proudly mentioned, "I have a hidden skill of making any wig look like my actual hair," Yoo Ah In said of this keyword, adding that the long hair he flaunted in 'Hellbound' was also a wig.

Many viewers and admirers were astonished when Yoo Ah In disclosed that the hairstyles he had in prior dramas were, likewise, wigs. His hair in the film 'Thread of Lies' and the tvN's 'Chicago Typewriter' were both wigs, in addition to his lengthy locks in the drama 'Sungkyunkwan Scandal.'

Watch the full interview here: