The England international, who will captain the Three Lions against San Marino this evening, looked like he was thinning on top while addressing the media in an England press conference yesterday.
Despite spending £30,000 on the initial procedure, the director of London's Harley Street Hair Clinic Nadeem Uddin has claimed that more treatment is sometimes necessary.
"Wayne's treatment, like that performed by the Harley Street Hair Clinic on all our clients, involves an element of lifetime support," Khan told the Daily Mail. "In some cases this can include continuing treatment if required to complement the original procedure."
Meanwhile, Rooney is expecting a second child with his wife Coleen.