L'Oreal

L'Oreal Infallible Flash Cat Eye Liquid Liner.

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About this product

A pencil eyeliner in multiple shades designed for precise application on the lash line and waterline.

Full ingredients

Cyclopentasiloxane, Hydrogenated Olive Oil Stearyl Esters, Polyethylene, Polybutene, Silica Silylate, Candelilla Cera/Candelilla Wax, Cire De Candelilla, Cera Microcristallina, Microcrystalline Wax, Cire Microcristalline, Octyldodecanol, Theobroma Grandiflorum/Theobroma Grandiflorum Seed Butter, Sodium Ascorbyl Phosphate, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate, Echium Plantagineum Seed Oil, Tocopheryl Nicotinate, Sodium Hyaluronate, Zinc Gluconate, Magnesium Aspartate, Cardiospermum Halicacabum Flower/Leaf/Vine Extract, Helianthus Annuus, Sunflower Seed Oil Unsaponifiables, Water, Copper Gluconate

Guru Score

88%

Yay

Early verdict · Few reviews so far

What they liked

Bright waterline shade available
Reliable performer

What they flagged

Nothing. None of the experts who reviewed it raised a problem.

What the gurus are saying

Brightening the waterline with this pencil eyeliner is a go-to move for creating a lifted look. One dermatologist who has used L'Oreal eyeliners before found them reliable, though the takes here are limited so far.

Synthesized from 3 expert reviews · most recent take December 2025

Type

Liquid

Key actives

Vitamin C Hyaluronic acidVitamin E

Formula notes

Fragrance-freeNo drying alcohol

Where to buy

Sephora → Ulta → Amazon → Google →

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What the gurus are saying.

Every take we've logged from this product's reviews across YouTube. Click any row to watch the moment they said it.

All takes Yay takes Nay takes Mixed takes Hide sponsored

HotandFlashy

1.23M subs

✓Yay

"And this was so easy to get your wing on in exactly the right place."

Top Pick: winged eyeliner

All 3 takes from HotandFlashy

Best Makeup of 2025 for Mature Skin! Drugstore to High End

"And this was so easy to get your wing on in exactly the right place."

Faves + Fails! BEST in BEAUTY July 2025! NEW Launches + Old FAVES!

"And it worked like a charm."

Testing VIRAL DRUGSTORE Makeup on Mature Skin! Close-Ups | All Day Wear Test

"The L'Oreal Flash Cat Eye Liner is really good. Look at that staying power. Nine hours and this looks just applied perfectly in place. No flaking, no smudging, no rubbing off. Everyone that I was out with tonight commented on the wing and how nice it looked. This is really easy to work with. If you love a winged liner, definitely try this little template. It makes it super easy to do and the liner really stays in place. It's a nice bold but matte black and it's really great looking."

Allie Glines

829k subs

✓Yay

"I'm also going to brighten up the waterline with the um L'Oreal infallible pencil this is an eyeliner and this is the shade bright nude you guys know I love upright waterline"

Dr Dray

2.69M subs

✓Yay

"Looking forward to messing around with that because I have used L'Oreal eyeliners before with pretty good success."

What the evidence says.

Independent of what the gurus think, this is what the published research supports about the main active ingredients here.

Vitamin C

Topical vitamin C is an antioxidant with reasonable evidence for dullness and uneven tone. It breaks down in light and air, so how a product is formulated and packaged matters as much as the percentage on the front.

Source: DermNet

Humectants and emollients

Ingredients like these draw water into the surface layers and slow how fast it leaves. The evidence is for comfort, softness and hydration rather than for changing the structure of the skin.

Source: DermNet

Frequently asked.

What is L'Oreal Infallible Flash Cat Eye Liquid Liner?

A pencil eyeliner in multiple shades designed for precise application on the lash line and waterline.

Is L'Oreal Infallible Flash Cat Eye Liquid Liner worth it?

Yes. All 3 gurus who reviewed it give it their stamp of approval, for a Guru Score of 88%.

What is L'Oreal Infallible Flash Cat Eye Liquid Liner's Guru Score?

L'Oreal Infallible Flash Cat Eye Liquid Liner holds a Guru Score of 88%. That is our read on how warmly the experts talk about it, based on the verdicts of 3 expert reviewers we have collected. At least one expert has named it a Top Pick in its category.