Justin Bieber : In Trouble ...Losing Ground With Fans

After Justin Bieber recommended that Prince William use Propecia to grow back his thinning hair, many came out to defend the future king. But hair transplant surgeon Dr. Asim Shahmalak points out that the pop star is no medical expert.

"[William] would have to take Propecia for the rest of his life and it would not help him to grow new hair," says Shahmalak, warning that those patients who do take the drug could suffer the loss of libido as a side effect. "Prince William has been losing his hair since he was 25. His hair loss is even worse than his father Charles. And obviously his grandfather Philip is bald too. That is a strong family gene. There is a strong likelihood that any male child he has with Kate will also have this bald gene."

Justin created a scandal after telling Rollercoaster magazine, "I mean, there are things to prevent that nowadays, like Propecia. I don't know why he doesn't just get those things, those products. You just take Propecia and your hair grows back. Have you not got it over here?"

However, Shahmalak, from Crown Clinic in the U.K., says the only way the prince can restore a reasonable amount of hair density to his head is through a procedure in which 3,000 to 4,000 hair grafts are taken from the back of the scalp and moved to the top of the head. This procedure isn’t available through the British National Health Service, and costs around $1,600 a year.

Justin Bieber : Faces Backlash

"Off with his head!" might as well be the U.K.’s response to Justin Bieber's remarks about the receding hairline of Prince William.

"I mean, there are things to prevent that nowadays, like Propecia. I don't know why he doesn't just get those things, those products. You just take Propecia and your hair grows back. Have you not got it over here?" Justin asked Rollercoaster magazine.

But now the teenager with a luscious head of hair has found himself at the center of a backlash in the U.K. from fans of William who have jumped to his defense.

"The Brits are viewing Justin Bieber's diss about Prince William's challenging hair problem in the same way you view an annoying fly buzzing around you. He needs to be swatted away," British journalist and author of "Wicked Whispers," Jessica Callan, told me. "Wills and Prince Harry may joke about William's thinning hair, but that doesn't mean a kid like Justin can come sauntering in and join in the joke. It's like inviting someone over for dinner and they tell you how awful your carpet is. Even if you agree, how dare they say it? So the Biebs had better watch out! Wills may be thinning on top but he is one cool royal and landed himself the hottest future queen England has ever had. How can Justin and his girly hairstyle possibly compete with that?"

However, it's not just the Brits who think Justin should shut up. Leigh Rossini, director of publicity for Louis Licari Salons and star of Oxygen's new reality show "Girlfriend Confidential," says that Bieber should worry about his own haircut, "instead of worrying about how a prince wears his hair!" Ouch