The Immunity-Boosting Supplement Model Irina Shayk Picks Up in Milan

There’s no rest for the weary during fashion month: With two cities down and still two more to go, maintaining stamina on the marathon-like circuit is a must. Supermodel Irina Shayk has discovered the secret to keeping energy levels high—without resorting to multiple shots of espresso. The best part: You can add her trick to your arsenal upon touchdown in Milan.

“After the show, I’m jumping in an airplane, so it’s very important to stay healthy,” said the model backstage last week, downing what appeared to be vitamin powder while receiving final touches on her hair. “It’s papaya,” she said, revealing her stash of Immun’Âge, a natural supplement comprised of fermented papaya preparation (FPP) said to combat oxidative stress and boost the immune system. “I bought it in Italy and you have to put it under your tongue every day.”

If Shayk’s glowing skin and megawatt smile are any indication, taking the powder certainly can’t hurt. (Other fashion-world fans, the company claims, include Stefano Gabbana and Italian Vogue editor-in-chief Franca Sozzani). Stock up now, then hit the ground running for fashion’s final lap in Paris—or simply get a head start on combating cold and flu season.

$65 for a month-long supply; immunage.biz