Scots singer and actor John Barrowman has revealed his raven black hair is the result of his new bad guy role in a hit Hollywood show.

The Glasgow-born entertainer has just filmed scenes for his guest appearance in Desperate Housewives.

Barrowman flew back from Los Angeles on Thursday after filming scenes for the US series.

The 43-year-old said: "I really enjoyed it. It's going to air in June here. That's why my hair is so dark at the moment because they gave me what I call Bad Guy, Black Hair. I'm not a very nice guy in it.

"I'm playing a character really different from anything I've ever played before."

He added: "When I first went to America we went on a tour of Universal Studios and at that time the houses on Wisteria Lane were used for The Munsters and quite a few other homes that you would recognise if you went back into the 60s and 70s and 80s for television.

"As a kid I went down that way for the Universal Studios tour not knowing that as an adult man I would actually be filming with some of the biggest TV stars in America, and also not knowing that I would be on Desperate Housewives which is ranked as one of the top three shows in the history of television around the world.

"So that was kind of a humbling moment when I walked down that street for the first time to film. It was good."

He was speaking as he promoted Christmas pantomime Aladdin in Glasgow, in which he is playing the lead role.

The show is running at the Scottish Exhibition and Conference Centre's Clyde Auditorium from December 11 to January 9 2011.

He said: "I'm very, very excited to be coming to Glasgow. I love pantomime because it's an art form that many people turn their noses up at in the industry and I think that's a load of rubbish.

"I do it because you are introducing kids to the world of theatre. We all have memories of it no matter how old or where you are from."

The actor said it felt "great" to come back to Glasgow: "When you leave Scotland you actually become more Scottish when you go away to a foreign country and you become more proud of your heritage. So when I come back I get quite emotional."

The Torchwood star admitted he had not seen the new Doctor Who episodes with Matt Smith but that he had downloaded them to watch on his computer.