During her time at Kensington Palace, Princess Diana's blonde, perfectly coiffed hair was the envy of many ladies. However, eco-conscious King Charles reportedly requested that she cease using hair spray since it was harmful to the environment, a professional recounted.
Editor-in-chief of Majesty Magazine, Ingrid Seward, recalled how the then-King-in-waiting urged his wife to stop using the hair product, which she was allegedly quite fond of, in an interview for Channel 4's Charles: Our New King, which airs tomorrow at 8pm.
According to reports from 1988, the King, who was then the Prince of Wales, eventually banned hair spray from Kensington Palace because he knew how harmful aerosols were to the Ozone layer.
Princess Diana, who passed away in 1997, was told by Seward that she didn't understand why her husband insisted so vehemently that she quit using the product.
Diana was hilarious when Charles first mentioned the ozone layer, according to Ingrid.
You must quit using your aerosol hair spray, he said, and she questioned "Why?"
She believed he was totally out of his mind when he said, "Because aerosols are developing a hole in the Ozone layer."
The future King eventually forbade the product from the London home he shared with Diana, according to reports from 1988.
Charles, who was 39 at the time, stated in a speech to the recipients of awards from a programme run by the Royal Society of Arts that he thought the items were bad for the environment even if that wasn't scientifically proven at the time.
At the time, he said, "I personally have forbidden the use of aerosols in my family as I have grown older and more dictatorial."
'Trouble still exists with finding suitable and decent enough alternatives to hair spray - as I am sure many spouses here will find,' he continued, perhaps referring to Princess Diana, who died at the age of 27.
David Bailey, 83, a well-known photographer who captured images of everyone from supermodels to the Queen throughout the course of his long career, claimed earlier this year that Princess Diana had "awful hair."
In March, he claimed that Diana's hair was "stiff as a plastic dummy" due to "hairspray" in an interview with The Daily Telegraph.
Diana wasn't the only person who believed the future King's environmental views were crazy.
When it came to his environmental concerns, the King was well ahead of his time.
According to Ayesha Hazarika, a journalist and broadcaster, "People believed King Charles was some kind of crazy for talking about the environment."
She referred to the type of remark others were making about Charles at the time: "Why is he talking about organic farming, this all seems a bit crazy."