He doesn't answer for a long moment, debating the merits of burying his face in his hands until the sand covers him up entirely. That would be preferable. But... not rational. And rational finally wins out over the embarrassment.

Better get this over with.

A motion of his hand towards something more sheltered - a little overhang acting as a windbreak. Less need to shout. Less sand blowing over there too.

And, once repositioned, he really can put his face in a hand. "It's - like those rough brushes for human skin. Loofers?" Loofahs. He means those. "Like if you mixed one of those with an electric sander. I haven't... it's been a long time, and it was getting noticeable."

... Yes, Steve, he is fully admitting he is standing topless in a sandstorm to exfoliate.