Trump shared a post implying that fast food giant McDonald's fries were the secret to his signature haircut.

On the way to the Minneapolis election campaign in the Air Force One On September 30, US President Donald Trump shared the 2018 Twitter post of Ari Fleischer's, the White House press secretary under President George Bush.

"It won't work," wrote Fleischer, who was bald.

But Trump, who is known for his passion for McDonald's food and even treats it to his White House guests, says he is living proof of that.

According to ABC, Japanese scientists say McDonald's has added a chemical to the chips to keep the oil from bubbling.

Trump's carefully groomed blond hair has long been the subject of attention.

Many experts have tried to unravel Trump's signature haircut, but in an interview with Rolling Stone in 2011, Trump insisted his only secret was Head & Shoulders shampoo.