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COSNORI Superproof Fitting Brush Eyeliner is a liquid pen eyeliner built to stay put—through sweat, oil, and whatever your day throws at it.
The 0.1mm ultra-fine brush tip gives you full control for everything from subtle lash-line definition to sharp wings.
Available in Black, Black Brown, and Brown to suit your mood and style.
Anyone who's tired of their eyeliner smudging, fading, or disappearing by lunch. It's especially helpful for oily lids, monolids, or hooded eyes, but works beautifully on all eye shapes.
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As of May 12, 2026, Superproof Fitting Brush Eyeliner is cheapest at OLIVE YOUNG for $9.96.
Yes — dropped in price 3 times in the last 90 days, most recently to $11.90 at Cupidrop on April 14, 2026.
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