The last film in the Harry Potter prequel series, Fantastic Beasts: The Secrets of Dumbledore, was released last year.
"They made me look like death," the singer joked during an appearance on The Graham Norton Show.
The Oscar-winning star previously came under fire for playing the artist Lili Elbe in the 2015 film.
Eddie Redmayne Says 'Vitriol' Towards JK Rowling Is 'Equally Disgusting' As Abuse Faced By Trans People
The Fantastic Beasts star sent Rowling a "private note" amid the backlash over her comments about trans people.
The Fantastic Beasts star has said he wants to make it "absolutely clear" that he disagrees with the Harry Potter author.
As the BBC's lunchtime medical soap celebrates its 20th anniversary, we remember some of the famous faces who've dropped by the Riverside Health Centre.
‘The Crimes of Grindelwald’ just had its world premiere in Paris. The film stars Eddie Redmayne, Jude Law, Johnny Depp, Katherine Waterston and Ezra Miller and is the second in a new series of films set in the Wizarding World of Harry Potter.
It seems all that time on the set of ‘Fantastic Beasts’ has paid off.
As I watched Eddie Redmayne tripping over his own legs, I became convinced that I too had Motor Neurone Disease. I was given my diagnosis three months later