Donald Trump's hair has become a topic of discussion again, so one expert weighed in on the procedures he might have had to maintain his locks.

Dr. Gary Linkov, a New York City-based facial plastic surgeon who has appeared on "The Dr. Oz Show," shared his assessment of the former U.S. president's crowning glory. In a YouTube video, Linkov discussed the changes in Trump's hair from his childhood until 2018 and claimed that the businessman-turned-politician might have had several procedures to keep his hair thick and luscious.

US President Donald Trump
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Donald Trump steps off Air Force One upon arrival at Morristown Municipal Airport in Morristown, New Jersey en route Bedminster, New Jersey on July 19, 2019.

While flashing different photos of Trump through the years, Linkov pointed out that in 1950, Trump's hair at age 4 naturally parted on the left side. In 1964, at the age of 18, Trump's hairline part was still on the left side, but he chose to comb it over to the right. At the time, he had a widow's peak right in the center of the hairline and an early slight frontal temporal recession, according to the expert.

Showing a black-and-white snap of the politician when he was 30, Linkov said the exact degree of recession was difficult to assess because his hair was combed onto the forehead. But in doing so, Trump concealed his frontal and temporal corners. Also, the architecture of his hairline had changed significantly compared to when he was 18. His hairline was much straighter and lower, and it appeared less natural, per the plastic surgeon.

Donald Trump
(Photo : David Becker/Getty Images)
Republican presidential candidate and former U.S. President Donald Trump stands on stage during a campaign event at Big League Dreams Las Vegas on January 27, 2024 in Las Vegas, Nevada.

Linkov speculated that at age 32 in 1978, Trump might have had hair plugs and punch grafts -- first popularized in the 1950s by Dr. Norman Orentreich in the Big Apple. The procedure involved taking 4 mm-sized punches from the back of the head and moving those islands of hair to the front of the scalp.

Continuing his discussion while presenting different photos of Trump, Linkov surmised that the businessman took finasteride sometime in 1985 when he was 39. He also claimed that Trump might have had a rotational flap at 45 and a second rotational flap at age 47.

By 2002, when Trump was 56, his hairline looked more robust, with the right temple and right frontal temporal area appearing more concealed. Linkov believes he had a follicular unit transplantation (FUT), which was a popular method at the time.

Meanwhile, the expert noticed in a 2004-captured picture of Trump a scar pattern on the left-hand side, which seemed consistent with the rotational flaps. Observing a photo from 2009, when Trump was 63, Linkov pointed out some frontal scalp thinning. Since the hair was combed posteriorly, it covered a lot of the mid-scalp and crown.

Donald Trump
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Donald Trump speaks to the crowd after the fight between Evander Holyfield and Vitor Belfort during Evander Holyfield vs. Vitor Belfort presented by Triller at Seminole Hard Rock Hotel & Casino on September 11, 2021 in Hollywood, Florida.

In 2011, at the age of 65, Trump's frontal scalp started to look full again, so Linkov guessed he might have had a follicular unit extraction (FUE). The method involves shaving the back of the head and harvesting individual hair follicles for transfer. The hair is placed into tiny cuts made in the scalp. The process usually leaves tiny scars, but they are not noticeable.

In 2018, at 72, Trump was photographed with some scars on the left side of his head, which could be related to the suspected rotational flap. There was also a visible scar on the right side. Part of the footage shown in Linkov's video was a short clip of Trump walking upstairs with his thinning hair on the camera. Based on the way his hair flapped, Linkov said he might have had a right-sided rotational flap.

Enstarz could not independently verify Linkov's claims in his YouTube video.

In related news, Trump was recently seen sporting a light orange hair color. According to an anonymous insider, the ex-POTUS "can't sit still."  His hair color reportedly ranges from dark blond to light orange, depending on how long his hairdressers can get him to sit still.