I Tried Fenty Beauty's Fine Linez Eyeliner ⁘ Here's My Honest Review

Waterproof products are a staple in my makeup bag. As a naturally sweaty person, I've tested dozens of products to see if they hold up to their waterproof claims. It's been a long time since I've switched up my own go-tos — Rare Beauty Perfect Strokes Matte Liquid Liner and Urban Decay 24/7 Gilde-On Waterproof Eyeliner — so I knew I had to put the new Fenty Beauty Fine Linez Eyeliner to the test.

The brand's first product launch of 2026, these eyeliners were created to be used on your waterline to help define and brighten the area. Unlike Fenty's Flypencil , which is water-resistant, meaning it offers a lower level of protection against heavy moisture, the Fine Linez liner is completely waterproof and is — theoretically — made to withstand heavy sweat, tears, and submersion.

Because it's the middle of winter in New York City, I'm putting these liners to the test at my local hot yoga studio, where I'm guaranteed to sweat. And, in the name of good journalism, I am sharing some rather unflattering photos of myself to provide authentic before and after shots of the liner, which I tested on my lash line and on my eyelid. Continue reading for my honest, unfiltered thoughts about the latest Fenty release.

First and foremost, the color range is absolutely gorgeous, even if I do wish a deep purple had been included in the launch. The collection included five brightening shades, which instantly made my eyes look more vibrant when applied to my waterline. The formula itself is easy to apply, but a bit on the drier side. While I wouldn't use this liner for truly fine lines or details, it does provide a rich, deep pigment, and the built-in clean-up tip helps sharpen the lines without dirtying another tool.

I had some mixed results with Fine Linez. One of the days, I lined my top lash line with "Cuz I'm Black" and the bottom with "Naked Beach" and both colors seemed to have vanished by the time I got home from an event. This could have been a user error; my eyes water nonstop during the winter, and walking outside in below-freezing weather may have impacted the formula's staying power. I didn't have this problem when I tested the liner at the gym.