Long story short: Tarte’s Tartlette Tubing Mascara is so good it deserves to be the fourth item in your “phone, wallet, keys” mantra. This grippy, volumizing, long-lasting, and easy-to-remove tubing formula coats your lashes in rich pigment (choose between classic black and chocolatey brown) for all-day wear that withstands the elements.

Oh, and did we mention it’s on sale for Amazon Prime Day? Normally priced at $28—bordering on splurge territory—during the Prime Day sale (July 7 at 4:00 PM PST to July 11 at 3:59 PM PST), you can snag a tube for just $17. Heart eyes on heart eyes.

According to contributing writer Annie Blackman, this mascara made her believe in mascara again. “I usually steer clear of mascara because it always travels to my under eyes within hours, but the Tartelette Tubing Mascara has proven me wrong,” she says. “This stuff stays put, and I love the mascara’s chocolately brown hue that keeps things looking natural. I will say, though, on days where I’m looking for a doe-eyed look, I go for a more traditional formula.”

While we’re sold on vibes alone, there’s science at play that makes the whole operation run so smoothly. “Tubing mascaras are known for their excellent long-wear and ability to resist flaking and smudging that can occur due to oily sebum on the eyelids or watery eyes,” says cosmetic chemist Kelly Dobos. The polymer film acts like a sleeve, she says, coating each lash to add durability and extend wear time.

Beyond the essential polymers signature to tubing mascaras, Tarte’s formula also boasts conditioning ingredients like shea butter and castor oil, leaving your flutter feeling softer once the tubes slide satisfyingly off at the end of the day (we know—you love that part).

Pick up this TikTok-viral mascara on sale before it’s too late. No, you can’t see us, but we just winked.

More Amazon Prime Day shopping inspo coming at you in 3, 2, 1: