Mark Zuckerberg has his armpits blow-dried before big events, an unreleased book claims, according to a reviewer.
Facebook communications executives have been helping their CEO get rid of anxiety-induced sweat using the unconventional method, according to Bloomberg's Austin Carr in his review of the book.
Zuckerberg became well-known for his perspiration in a 2010 interview at the D: All Things Digital conference which saw him sweat profusely while answering difficult questions. He was ridiculed online as a result.
Carr claimed Zuckerberg is trying to stop this happening again because he is "consumed by his public image".
The anecdote comes from Facebook: the inside story, a new book by technology journalist Steven Levy which Carr reviewed on February 14.
A spokesperson for Facebook questioned the claim but didn't deny it.
"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," Liz Bourgeois told Business Insider in an email.
Levy had access to a significant part of Zuckerberg's 2006 diary which formed part of his book which comes out later this month.
It explores the early days of Facebook and Zuckerberg's determination and ambition to make the social media website succeed.
The book then looks into the "Trump era" of the platform in what Carr describes as a "distressing" time.
In his review, Carr said Levy's portrayal of Zuckerberg was somewhere "between naive genius and robotic robber baron".
The book also had contributions by some of Facebook's executives but Carr believed the book didn't fully address the company's moral compass "given how often company boilerplate dilutes the truth".
"Still, the book does an admirable job calling balls and strikes on the execs' revisionist version of Facebook’s past and present," he said.