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Clarins hosted its second annual party during the Austin Formula 1 races on Oct. 18Along with V magazine, the French cosmetics brand celebrated their best-selling products, the Double Serum and Total Eye Lift, with some help from Olivia Jade, Levi McConaughey, Ashley Green and Bachelor Nation’s Zach Shallcross and Kaity BiggarPEOPLE got the details on these stars’ skincare routines and what is making them glow from the inside out

While Max Verstappen, Lando Norris, Charles Leclerc, Lewis Hamilton and more Formula 1 stars brought the action on the track in Austin, Texas, Clarins hosted a glam riverside party with its own star power.

The beauty brand (which celebrated nearly 100 years in the industry with an Icons soirée in Los Angeles this March) along with V magazine, returned to the Texan capital on Oct. 18 for their second annual beauty bash taking place during F1 weekend.

Before the action — and by that we mean the mingling, the handing out of potato chips topped with caviar and the opening of the Swig bar — kicked off at the Waller Creek Boathouse overlooking the city’s Lady Bird Lake, PEOPLE caught up with a few of the celebs in attendance about skincare.

Olivia Jade and Levi McConaughey stopped by to chat about how their famous families influence their routines.

“She’s always been really serious about wearing sunscreen,” Olivia, 26, said of her mom and former Full House star, Lori Loughlin. “I think that’s why she looks so good, because she does not let the sun see her skin.”

Meanwhile, 17-year-old Levi said he’s earned his knowledge at home thanks to his mom, Camila Alves McConaughey and 15-year-old sister, Vida. “Just some cleanser, moisturizer, and a little something that my sister and mom slip in there,” the teen says of his simple habits. And while his dad Matthew McConaughey may be an Oscar winner, Levi said he’s inspired him to always resort to the basics with grooming. “It’s important.”

Levi McConaughey.

Presley Ann/Getty

Actress Ashley Greene, who is currently filming a new project, shared how a focused skincare regimen fits into her schedule, which also includes meditation and running to self-center. “What I love about Clarins is that it’s all about skincare first, and you don’t need to wear a ton of makeup. It’s very French, if you will,” she says.

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Newlyweds and Bachelor Nation stars Zach Shallcross and Kaity Biggar, who tied the knot in May, arrived looking loved-up and glowing. Biggar admitted she’s a big fan of giving her new husband a facial, but truthfully, he doesn’t need any help in that department. Of Clarins’ bestselling Double Serum, celebrated with the Total Eye Lift cream, the reality TV star looked to her man and said, “This one wears it religiously.”

Kaity Biggar and Zach Shallcross.

Presley Ann/Getty

Naturally, we also had to ask everyone about what makes them glow from the inside out.

“In life, it’s always my children [sons Arlo and Kane] and my wife [Meghan McDermott]” says actor Theo Rossi. “And the 30-something animals on the ranch [he owns one in Dripping Springs, Texas].”

Levi also shared how he’s spending some solo time amid his blossoming career (he starred in the September film, The Lost Bus, alongside his father). “Figuring it out as I go,” he says of balancing his personal life with being on set. “It can be hard sometimes, but I love it.”