Pittsburgh Steelers defensive end Brett Keisel joined ESPN Radio’s “Mike and Mike” on Monday.

Keisel talked about a range of topics — first and foremost his beard, and the logistical challenges it poses to wearing a helmet. (He insists he has different helmets depending on the length of the beard.) There is also some shameless plugging for Head and Shoulders, for which Keisel is a spokesman.

He also touches on some more serious topics, like Pittsburgh’s season-ending loss to the Broncos, as well as what it feels like to lose a Super Bowl. Keisel also talks about former offensive coordinator Bruce Arians’ reported move to Indianapolis, which has also reportedly plucked away Pittsburgh’s linebacker coach Keith Butler.

Keisel, who has been with the Steelers since 2002, had 48 tackles in 14 games in 2011.

For more on the Steelers, check out Behind the Steel Curtain.