His hairstyle might not be the most popular.

But Donald Trump's infamous mane makes him appear more attractive, powerful and successful than his balding peers.

That's the conclusion of research by Harley Street hair-loss clinic DHI London, who say attitudes to male pattern baldness haven't changed, even though it affects 85 per cent of men by the age of fifty.

In a survey, they found that the vast majority of respondents said that all of the subjects - including Trump, Emmanuel Macron, Prince Harry, Harry Styles, Brad Pitt and Russell Brand - looked 'better' or 'much better' with a full head of hair.

Less is more? Donald Trump is one of several men who would be seen as less powerful and attractive if he were bald, according to a new study

Despite their charisma, even the likes of Emmanuel Macron and Prince Harry aren't immune from mother nature's cruel blow.

That's because hair remains a key indicator of fertility, strength and virility in the primitive parts of our brains, DHI claim.

The company, who have been operating for 47 years and are known for their so-called 'lunch-hour' hair transplant, sampled more than 100 people in an online poll, earlier this month.

Comprising 50 men and 50 women, the group were shown altered images of famous men with - and without - their trademark hair.

More than 80 per cent agreed that all of the subjects looked 'better' or 'much better' with a full head of hair.

More than four fifths of female respondents (82 per cent) said the bald versions of the famous men appeared instantly 'less' or 'much less' attractive on first view.

Hair today, gone tomorrow? Those surveyed doubted whether Macron would've had such a political landslide had his appearance lacked a full head of hair

Which do you prefer? Prince Harry imagined as he would look with hair loss (L) and as he is (R)

WHAT IS DHI'S 'LUNCH HOUR' HAIR TRANSPLANT ? They claim it's their best-ever hair transplant and is guaranteed for life. Using a technique called Direct Hair Implantation, it sees individual follicles extracted from the back of the head (because these hairs are rarely affected by baldness). The hair follicles are then implanted directly into the bald area using a patented tool, the DHI Implanter, which has a diameter of 1mm to avoid scarring. The actual implantation time can take just one hour, hence the nickname, although the entire process takes roughly five hours. DHI say it ensures a '100 per cent natural result' and that 'the implanted hair will never fall and will grow for lifetime.' Source: DHI Global Medical Group Advertisement

The same number also agreed that they appeared 'less' or 'slightly less' powerful.

Meanwhile, both genders were almost equal in claiming the 'bald' men would be less likely to succeed in the same professional scenario when compared to their non-bald self.

This, DHI claim, explains why a record number of men are undergoing hair transplant surgeries at their 62 clinics worldwide.

‘There’s a huge narrative about women’s appearance, but men's self-esteem, confidence and personal lives are often at the mercy of their hairline,’ says Kostas Giotis, Chief Executive of DHI London. ‘They're also prone to prejudice from others.

'Our research found that men are regularly considered less handsome, less powerful and less likely to succeed – purely because of a lack of hair.

'Obviously this isn't borne out of reality, but our respondents said they still felt these responses 'instinctively', even if they knew they were probably wrong on a rational level.'

Perhaps unsurprisingly, the men were also said to look 'older' without their hair.

Trump, who is 71, was ranked as looking in his 80s, Macron, who is 39, was mistaken for being in his mid-50s.

Meanwhile Prince Harry, 32, looked 40-something to the majority of participants.