Prince Harry caused a stir when he visited a top hair-loss clinic in London.

According to insiders, he underwent thickening treatment at the prestigious Philip Kingsley Trichological Clinic in London’s Mayfair.

The 35-year-old struggles with hair loss like his brother Prince William and his dad Prince Charles.

One expert is claiming that his bald patch has doubled since he married former actress Meghan Markle, but others are saying that his hair has appeared to have thickened after his visit toward the end of last year.

“Harry’s visit caused a real stir,” an insider said.

“This company is so prestigious. It’s one of the best places in the world. It’s got a whole range of different treatment plans.”

“The richest, most famous and well-connected use it. The meeting with Harry went well.”

“It would be very expensive. It’s the place to go in London and it’s right in the heart of Mayfair.”

The Philip Kingsley Trichological Clinic website says that they have treated royalty, actors, models and athletes in the past.