So, what does that mean? Well, Mary contours and conceals the face before she applies foundation instead of doing it the other way around. Yes, you read that correctly: contour first, foundation second. User @inamarimaki summed up the beauty hack best, saying Mary "basically flips the normal makeup routine."
And after the technique went viral, Mary even joined TikTok to explain her method.
"It's like laying down the bones under the skin," she shared in the Jan. 9 video. "The contour and the highlight being the bones and the skin being the foundation."
This isn't the first time she's given an in-depth look at her beauty trick.
In a 2018 tutorial on YouTuber Melissa Alatorre's channel, Mary noted that applying contour as the first step is comparable to "creating the bone structure." Once she's shaped the face with contour and concealer, she'll blend it out with a brush.
Kevin Mazur/MG21/Getty Images for The Met Museum/Vogue
Afterward, she'll add foundation and blend it out with a fluffy powder brush (another interesting hack since she doesn't use a foundation brush). Next, she contours and highlights the face again and will layer a darker foundation on top so it all looks seamless.
Of course, Mary's viral makeup look isn't the only technique TikTokers can't get enough of. Keep scrolling to see all of the buzzy beauty trends to recently take the social media platform by storm.