Donald Trump on The Tonight Show Screenshot from Youtube/Inside Edition

A video showing US President Donald Trump having a bad hair day has gone viral, drawing various reactions. Last week, he was climbing the stairs of the Air Force One, which will transport him to Mar-a-Lago, when the wind picked up.

There were handshakes and a salute before the president reached for the bannister. The wind made a grab for his hair halfway up the steps, blasting it right, left and centre.

The strands of his hair were lifted like a flap. His scalp was revealed for all to see. Jensen Karp, who shared the footage, wrote that he “can’t stop watching this.”

“That’s weird looking - it’s mesmerizing,” another wrote. The moment was even compared to a scene in “Empire Strikes Back.”

Trump, however, did not appear terribly concerned about the wind blowing his hair at that time. When he reached the top steps, the president turned around and even managed to wave before he headed inside his plane.

The POTUS’ hair has previously drawn speculations that it was a wig or made of implants. When asked, he tried to convince people during the 2016 presidential election campaign that it was real. On a number of occasions, crowd members were asked to take hold and pull it.

Michael Wolff’s book titled “Fire and Fury: Fire and Fury: Inside the Trump White House” suggests that first daughter Ivanka Trump is among those who have been critical of the way her father styles his hair. It claims that Ivanka has "often described the mechanics behind it to friends."

"An absolutely clean pate - a contained island after scalp reduction surgery - surrounded by a furry circle of hair around the sides and front, from which all ends are drawn up to meet in the centre then swept back and secured by a stiffening spray," the books quotes her as saying.

Harold Bornstein, who is said to have been the POTUS doctor for several years, told the New York Times that Trump used a prostate-related drug for hair growth. There were also claims that he used medicine to avoid baldness. Ronny Jackson, a US admiral who documented Trump’s annual medical, reported earlier this year that the 71-year-old president was specifically taking a medicine called Propecia.