Madame Tussauds use YAK HAIR to perfect Donald Trump’s infamous hairstyle.

Sculptors at Madame Tussauds in London are working hard behind the scene to complete a life-size wax figure of president-elect Donald Trump ahead of his inauguration on January 20.

The team has put a lot of thought into recreating Trump’s infamous orange-tinted matted hairstyle—and according to the Mirror, they finally settled on yak hair as the best proxy.

Work began in earnest in the London studio after the official announcement of Trump’s victory. But this is not the first wax model for the real estate magnate. Indeed, both Donald Trump and Hillary Clinton already have wax models on display in the U.S.