According to Business Insider’s Austin Carr, a portion the upcoming book, Facebook: The Inside Story, details a time when Mark Zuckerberg paid an unidentified Facebook communications executive to blow dry his armpits before his public speeches. 

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“He, too, is consumed by his public image. (A communications exec is shown blow-drying the CEO’s armpits before speaking appearances to eliminate anxiety sweat.),” Carr writes while describing the portrait Zuckerberg the book paints.

“I doubt this is true and if so it would have been at our communications team’s request, but surely anyone who has ever worn a grey T-shirt can relate,” spokesperson Liz Bourgeois told Business Insider when asked for comment.

As noted by Complex, Zuckerberg has infamously dealt with perfusive sweating problems during public appearances. Speaking about the site’s controversial privacy issues in 2010 for a D8 interview with Kara Swisher, Zuckerberg suffered from a particularly bad case the sweats that gained traction in the mainstream media.

The book will detail the rise Facebook and how it has become one the most important websites in the world. Its Google Books description says it “tells the story how Facebook has changed our world and asks what the consequences will be for us all.”

You can pick up a pre-order copy  Facebook: The Inside Story here. The book ficially releases on February 25.