Musician Lindsey Buckingham’s Hairline

Hello Dr. Rassman,
With Fleetwood Mac starting up on a new world tour this year, I was just wondering if you could shed some light on guitarist Lindsey Buckingham’s hairline. It is without a doubt much higher than when he was younger, but its perfectly straight across the temples. Hair transplant or genetics?

Photo

His hairline did move up, but it’s difficult to tell for sure if there was work done based on the small photo you linked to. I did a Google Image Search and found some larger photos that appear to show a natural hairline. Maybe he has some styling at the corners to change the hairline’s appearance.

There’s a larger version of the above photo here.