This Smudge-Proof Eyeliner Is So Good I Slept in It Two Nights in a Row

As mesmerized as I am by the rise of so-called Instagram Makeup—typically involving full-coverage foundation, a Technicolor eye, and matte lipstick—I usually don't incorporate the look into my own routine. I'm much more minimalist in style, somewhat hopeless with an eyeshadow brush, and always, always short on time. That being said, there's one Instagram trend I can get behind: bold, beautiful winged eyeliner.

When I caught word that the Queen of Instagram Makeup herself, Huda Kattan, was releasing a new eyeliner this fall, I knew it had to be good. Much like me, Kattan is rarely seen anywhere without her signature swipe of black liner. "Liner was actually the first piece of makeup I ever wore," she says. "I was probably 12 when I started wearing eyeliner. It was the one thing that I would never leave the house without."

Huda Beauty's Life Liner features a pencil on one side and a liquid on the other. It may be surprising for a makeup maximalist, but Kattan wanted to streamline the liner process—and make it easier for travel. The pencil has a twist-up system that allows it to self-sharpen (always a plus), and the brush on the liquid is incredibly fine-tipped (Kattan herself cut the perfect point). The real kicker, however, is the 48-hour-wear claim for the liquid end (the pencil has a standard eight-hour wear time).

According to the brand, the staying power comes from a blend of silicones and silicone resins; the combination creates an elastic texture that bends with your eye and doesn't crack or smudge. The waterproof formula also features a lightweight film that protects the color once applied. Kattan says that she even uses it to lightly fill in her eyebrows for a day at the beach or pool—in the campaign video, she emerges dramatically from a tub of water, eyeliner wings perfectly intact.

Truth be told, I've already tried plenty of formulas that claim out-of-this-world wear but flake off at the first sign of a tear or an eye rub. My liquid-liner track record is a solid nine hours (and that's the best of the best), and I wanted to put Life Liner to the test. So, in the name of journalism, I slept with it on—two nights in a row. Read on for my liner diary.

Wednesday, 9 a.m., 0 hours in

This is perhaps the inkiest black eyeliner I have ever tried. It goes on easily, and I don't have to go back over any areas to fill in gaps or darken the line. While I'm super impressed with the color and the matte finish, it's very runny, making it hard to get the perfect wing. Even at this stage I can already tell that I'm going to be impressed by its staying power. The liner stays put once it goes on, making it a bit tricky to clean and perfect my wing. My usual "spit on a Q-tip and swipe" method (very sophisticated, I know) isn't working, so I reach for the makeup remover. Kattan recommends using her soon-to-be-launched Makeup Removing Balm (or a primer) on a cotton swab to fix any slipups. She also advises building your look slowly by beginning with the pencil as an outline, then wiping any excess liquid off the brush before starting your wing.

It takes me a little longer to get there, but once my wing is perfected, I'm pretty happy with the results.

Wednesday, 9 p.m., 12 hours in

After a full day of work and an extremely sweaty trip to Trader Joe's, Life Liner is still going strong. I've long since sweated off the rest of my makeup, but the liner still looks freshly applied.

Thursday, 9 a.m., 24 hours in

The liner stayed on quite well through the night (don't worry, I washed off the rest of my makeup). Shout-out to the Thrive Causemetics mascara, which also holds on for dear life while I sleep. The liner looks a little faded but is in good enough shape to not need a touch-up. At an early-morning event, several beauty editors compliment me on it.

Thursday, 9 p.m., 36 hours in

Signs of wear are starting to show, but only if you look super closely. The outer corners of my wing are getting a little blurred, and the pigment is beginning to lift right up against my waterline. It's still totally wearable, though. After a few glasses of wine with my coworkers—laughing so hard I have tears streaming down my face—I expected a lot worse.

Friday, 9 a.m., 48 hours in

Please enjoy this beautiful photo of me fresh out of bed, first thing in the morning. While the liner is passable, it's starting to smudge beyond saving, so it's now time to wash it off. Part of me was expecting to wake up with liner smeared all down my face, so I'm quite relieved.

Verdict: This eyeliner technically does hold up for a full 48 hours, but I would argue that it looks 100% perfect for only the first 24. That's still quite a feat, considering most formulas disintegrate on me around the 10-hour mark. Plus, I'm not so sure there's any reason you actually need an eyeliner that stays on for two nights, unless you're that committed to a quick getting-ready routine or stranded at someone's house sans makeup bag. I don't plan on wearing it to bed again, but after passing this test with flying colors, it's definitely accompanying me everywhere else.

Life Liner will be available September 12 on shophudabeauty.com.

Bella Cacciatore is the beauty associate at Glamour. Follow her on Instagram @bellacacciatore_.

Originally Appeared on Glamour