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It’s also full of vitamin C.

It's no secret that Gemma Chan has glowing skin—and now we know exactly how she gets her radiant complexion. In a new interview with Glamour, the 39-year-old actress opened up about all of her beauty and skincare secrets, including the drugstore products she can't live without. But one product really stood out to us.

Chan said L'Oreal Paris' Pure Hyaluronic Acid Serum is her go-to serum for baby smooth skin. Hyaluronic acid helps reduce wrinkles and plump the skin for a visibly dewier look while nourishing vitamin C instantly brightens the complexion.

“Vitamin C helps produce collagen (which keeps skin firm and reduces the appearance of wrinkles), and protects skin from sun damage and age spots,” Ranella Hirsch, M.D., a board-certified dermatologist practicing in Boston previously told Prevention.

The product is full of vitamin C, and has rave reviews from Amazon shoppers who say the formula actually works to smooth wrinkles. After just one week, one customer wrote in a review that her complexion looks incredible. "I feel I look 5 years younger," she wrote. "I am in love with this product. I've only been using it for a few days but I can already see the difference in my appearance and lines under and around my eyes," another shopper wrote. The reviews speak for themselves!

As far as the other products Chan can't live without, the actress has an arsenal of affordable, drugstore must-haves. She boasted all about the Vaseline Intensive Care Cocoa Glow Body Lotion, which has pure cocoa butter, and Davines Dry Texturizing Spray for effortless beachy waves.

In a recent interview with Vogue, Chan said she was inspired by her mom to start taking care of her skin and finding a beauty routine that works.

"My mum got me started in skincare while I was a teenager, which included cleansing, toning, and moisturizing daily," she told the outlet. "Her number one rule was always to make sure you look after your skin."

A post shared by Gemma Chan (@gemmachan)

But when it comes to true beauty, Chan says your inner glow is really where it's at—and we’re inclined to agree.

"Beauty for me is as much about the inside as the outside," she told Glamour. "Social media, in general, can be very focused on the exterior and the superficiality of things. When you feel great on the inside, you look better on the outside. It's all intrinsically linked."

We couldn’t have said it better ourselves. Shop Chan’s favorite serum while it’s on sale and supplies last!