This milestone birthday has fans scratching their heads.

Pharrell Williams turned 50 years old on Wednesday, and the news took many by surprise, with some even wondering if the star was “a vampire” as they took to social media to share their surprise about his youthful appearance.

“Is Pharrell a Vampire or Something cuz he never looks like his age,” one Twitter user posted. “Man is 50 and still looks soo young.”

“How is it possible that I appear older than Pharrell Williams?… Who is literally 50 years old…” another fan wondered, sharing a photo of the star on Twitter.

Another social media user tagged Williams in his tweet, writing, “Since You 50 Drop The Skincare Routine Cause We Wanna Know.”

It sounds like some fans — like one who suggested “he really should procure a skincare line” — missed the news that the singer has already spilled his secrets, dropping his own range of beauty products in 2020.

Williams’ line, Humanrace, includes everything from face cream ($52) to a Lotus Enzyme Exfoliator ($46), all made from ingredients like hyaluronic acid and moisturizing snow mushroom extract.

In fact, the “Happy” singer — who was named creative director of Louis Vuitton’s menswear line earlier this year — claims simple exfoliation is the secret to his age-defying skin.

“I exfoliate like a madman,” he told Dazed in 2017. “When you exfoliate and you drink a lot of water, that does good for you.”

“To me, the key is just exfoliating, like a monster,” the music producer added. “There’s a lot of dead skin. All the time. Like a narcissistic madman.”

Pardon us while we get scrubbing.