The model celebrated the launch of Clarins 2-in-1 oil-emulsion moisturizer, Plant Gold, last month
Speaking with PEOPLE ahead of the launch of Clarins’ Plant Gold Nutri-Revitalizing Oil-Emulsion moisturizer, the 2019 Sports Illustrated Swimsuit cover girl, revealed her two-product nighttime skincare routine.
Plant Gold, which includes Blue Orchid Oil, is great for morning because makeup can slip if just oil is applied.
“In my day-to-day, I don’t wear a lot of makeup, but if I have a lot on from a red carpeted event, I’ll use a regular makeup wipe to remove it,” Kostek, 27, explains. “Then I use a gentle foaming cleanser, which really gets down into the skin rather than just helping remove the makeup.”
As an all-in-one hydration treatment — and the third and final step in her nightly regime — the model relies on Clarins Blue Orchid oil.
“Instead of rubbing it all over the skin, you simply press it in,” she tells PEOPLE. “It’s such a delicate way to just apply it to the skin…then go to bed…rest and wake up beautifully regenerated.”
Along with an easy-to-maintain routine, the former Patriots cheerleader attributes her clear skin to wearing a small amount of makeup — and only when it’s absolutely necessary. Whether it be running errands or working out, “My number one tip is if you do not need to wear makeup for something, don’t,” Kostek says.
“I never travel wearing makeup,” she adds. “That’s helped so much with my skin…If you need to look nice when you get off the plane, walk into the bathroom, touch up your skin and walk out looking like you never even flew.”
“We get ready in the same bathroom,” Kostek say. “When he sees me applying my products at night…sometimes he gets very curious. I share with him and help him apply face masks. It’s a lot of sharing and caring between the two of us and learning a lot from each other.”
In addition to face masks, Gronkowski (who announced his retirement from the Patriots in March) has also taken an interest in another one of his girlfriend’s hobbies: Instagram!
“I never thought he would do my photos,” Kostek previously told PEOPLE of Gronkowski, 30. “I thought I would get a little uncomfortable in front of him when he has to take my shots. But he does a good job. It’s easy, and he’s so supportive.”