The Rock Disappears: 22 Prosthetics and Seven Adhesives for Johnson’s Tattoo Transformation

Dwayne “The Rock” Johnson is one of the most recognizable people on the planet, whose appearance, including his monumental physique and iconic Polynesian tattoos, is inseparable from his brand. That is why the task facing prosthetic makeup guru Kazu Hiro was monumental: to make The Rock disappear, giving way to legendary MMA fighter Mark Kerr in Benny Safdie’s biopic “The Smashing Machine.”

Architect of Likeness: Why Accuracy Yielded to Essence

Kazu Hiro, a two-time Oscar winner for transforming Gary Oldman into Winston Churchill (“Darkest Hour”) and Charlize Theron into Megyn Kelly (“Bombshell”), faced a classic dilemma: create a perfect photographic likeness of Kerr or capture his inner, more complex essence. Hiro admitted that if he had the time, he would have proposed more than ten makeup options. In the end, he created two test versions: one maximally accurate and a subtler, barely perceptible one.

“It’s always difficult when we work on someone’s likeness. But in this case, given the need for filming practicality, we opted for a more subtle approach,” explains Hiro. This choice meant fewer bulky prosthetics but more work managing the “progression of injuries”—eye swelling, a broken nose, and a missing tooth that had to change during the scenes.

Hiro’s motivation came from studying Kerr’s psychology, including through the 2002 HBO documentary “The Smashing Machine: The Life and Times of Extreme Fighter Mark Kerr.” Johnson, according to the master, worked incredibly hard to make his physique match Kerr’s as closely as possible, and Hiro was fascinated by Kerr’s duality: an aggressive fighter who spoke “almost like a child.”

22 Pieces of a New Identity: Anatomy of the Transformation

Transforming Johnson required a daily four-hour effort by a team of nearly 20 makeup artists (including Johnson’s personal makeup artist, Bjorn Rehbein). In total, 22 prosthetic pieces and a wig were applied to the actor’s face and head.

The key changes concerned Kerr’s bone structure and facial features:

• New Brow Ridge: To give Johnson Kerr’s heavier gaze, Hiro had to “lower” his brow ridge and add an artificial brow piece.
• Prosthetic Eyelid: This element proved the most difficult. The thickness of the prosthetic was almost half an inch (about 1.27 cm). If glued directly onto the eyelid, Johnson would not have been able to blink naturally. Hiro developed a special base piece that attached to the positive mold.
• Traumatic Elements: Cauliflower ear, scars, a prosthetic broken nose, and swelling that were added as the fight scenes progressed.

Even Kerr’s baldness required meticulous work. For the scene where Kerr shaves his head, Hiro created a silicone bald cap into which individual hair ventilation was manually implanted. This allowed a real barber to work with it as if it were real hair.

The Tattoo Paradox: How to Hide Polynesian Blackwork

For a website dedicated to tattoo culture, the operation to “remove” Dwayne Johnson’s tattoos is perhaps the most technically complex and symbolic part of the project. Johnson has extensive Polynesian blackwork covering his shoulder, chest, and back, symbolizing his Samoan heritage.

To embody Mark Kerr, whose tattoos matched the aesthetic of late 90s/early 2000s MMA, a two-part action was required:

1. Neutralization: Completely concealing Johnson’s iconic, heavy black tattoos. This is not just a matter of applying foundation but a multi-layered camouflage technique that must withstand physical exertion and sweat.
2. Application: Applying Mark Kerr’s tattoos over the perfectly concealed skin.

From a makeup perspective, covering large, dense black tattoos (blackwork) is always a challenge. The slightest defect or visible outline can shatter the illusion. This process underscores how critical the body is as a “canvas” in cinema: The Rock’s tattoos, which are his personal and cultural mark, had to be erased so that the character of Kerr, with his own history, could “breathe.”

War Against the Elements: Seven Types of Adhesive Against Sweat

Unlike roles in “Darkest Hour” or “Bombshell,” where the characters were static, Johnson, as an MMA fighter, sweated profusely during scenes. Sweat is essentially the main enemy of prosthetic makeup, as it weakens the adhesive.

Hiro and his team, working with special effects supervisor Glen Griffin, spent several days studying the “chemistry of sweat” for Johnson. They figured out exactly where the actor sweated the most and where the prosthetics started to lift first.

“We learned in which areas sweat seeps through the skin, weakening the glue. That’s why we probably needed six or seven different types of adhesive,” explained Kazu Hiro.

Interestingly, Johnson sweated heavily on his head, but his face remained relatively dry. This allowed the team to select the optimal combination of glues so that the 22 prosthetics could withstand the stress and intensity of the fight.

Despite all precautions, incidents occurred. Hiro recalls one time during filming when “the tip of Johnson’s nose fell off.” The element had to be repaired on the spot, and the problem recurred, which only emphasizes the complexity of working with realistic makeup in dynamic scenes.

The result of this titanic effort is not just makeup, but a deep immersion into the personality, where every prosthetic, every line, and even the absence of Johnson’s iconic tattoos serves a single purpose: to convey the complex and tragic story of Mark Kerr.