Urban Decay Waterline vs Rivals: Eye Pencil Showdown Guide

The Urban Decay 24/7 Glide-On Eye Pencil in Perversion and in Corrupt share the same cult waterproof formula in two black depths. Perversion is the blackest matte black. Corrupt is the softer brown-black. We compared them on intensity, wear, versatility, and best use.
| Factor | Urban Decay 24/7 Glide-On Eye Pencil, Pe | Urban Decay 24/7 Glide-On Eye Pencil, Co |
|---|---|---|
| Shade | Perversion, blackest black | Corrupt, brown-black |
| Intensity | Maximum drama | Soft definition |
| Finish | Matte | Slightly creamy matte |
| Waterproof wear | All day | All day |
| Tightlining | Excellent | Excellent |
| Best for daytime | Good | Excellent |
| Best for evenings | Excellent | Good |
| Price | Prestige pencil | Prestige pencil |
Our Verdict
Choose Perversion if you want the blackest black intensity for dramatic waterlines, tightlines, and evening looks. Choose Corrupt if you prefer a softer brown-black that defines beautifully for daytime wear. Both deliver the same creamy glide and famous 24/7 waterproof wear, so your intensity preference decides the winner. Warm the tip on your hand before applying so the creamy formula glides on smoothly.
Perversion vs Corrupt: Blackest Black or Brown-Black for the Waterline
The Urban Decay 24/7 Glide-On Eye Pencil in Perversion and in Corrupt share the same creamy waterproof formula, so the choice is entirely about how black your black needs to be. Perversion is a true matte black, the darkest pencil in the line, and on the waterline it creates maximum contrast: the whites of the eyes look brighter and the lash line looks denser. That drama is the point for evening looks, but in daylight Perversion can read harsh on fair skin or with minimal makeup. Corrupt is a brown-black, a black with warm brown undertones, and it delivers about eighty percent of the definition with a softer edge that suits daytime, office wear, and anyone who finds pure black aging.
On the waterline specifically, shade depth affects how the eye reads. A full Perversion waterline closes the eye visually, which suits large or prominent eyes that can handle the intensity. Corrupt keeps the eye looking open while still defining the lash line, which is why makeup artists reach for brown-black on smaller or deep-set eyes. Both shades transfer to the lower waterline the same way and wear the same number of hours, so this is a pure aesthetic call.
Tightlining vs Waterlining: Where the Product Actually Goes
Competitors use "waterline" and "tightline" interchangeably, and the confusion causes real irritation. The waterline is the inner rim of the lower lid, the wet strip between your lashes and your eyeball. The tightline is the base of the upper lashes, the tiny gaps between lash roots on the underside of the upper lid. Product on the waterline shows as a visible colored strip. Product in the tightline is invisible as a line; it just makes lashes look thicker. The 24/7 Glide-On pencil in either shade works for both, but the technique differs completely.
For the waterline, pull the lower lid down gently and run the pencil along the rim in short strokes. Expect the product to fade faster here than anywhere else, because tears and blinking wash the waterline constantly; even the 24/7 formula needs a midday touch-up on the waterline for most people. For tightlining, flip the approach: look down into a mirror, lift the upper lid slightly, and dot the pencil between the lash roots. Never drag across the waterline when tightlining, because that deposits product where tears carry it straight onto contact lenses or into the tear duct. The common mistake that causes stinging is lining the actual waterline while aiming for the tightline. If your eyes are sensitive to any waterline product, our kajal for sensitive eyes guide covers gentler formulas designed for the inner rim, and the Urban Decay 24/7 Glide-On guide has the full shade range if you want to experiment beyond these two blacks.
Contact Lens Wearers: Wearing 24/7 Pencils Without Lens Trouble
Pencil liner and contact lenses have a specific conflict: creamy pencil formulas like the 24/7 Glide-On can shed microscopic particles that migrate onto the lens surface, and once there they cause the gritty, filmy feeling lens wearers know well. The risk is highest on the waterline, where the product sits millimeters from the lens edge, and lowest on the upper lash line. If you wear lenses daily, keep Perversion and Corrupt on the upper lash line and tightline, and treat the lower waterline as optional rather than routine.
Insertion order matters more than most guides admit. Put your lenses in first, then apply liner. Lining first and inserting after drags a finger across fresh product and presses the lens directly onto it. At removal, take lenses out before you start removing makeup, so remover and dissolved pigment never sit against the lens. One more practical note: replace the pencil every three months and keep the cap on tight. A dried-out 24/7 pencil needs more pressure to deposit color, and that extra pressure near the waterline is what pushes particles toward the lens.
Sharpening the 24/7 Pencil Without Wasting Product
How often you sharpen depends on use. For upper lash line work, sharpen every two to three uses to keep the line crisp. For waterline use, sharpen every single time, because a blunt tip drags on the delicate inner rim and deposits uneven color. One underrated trick: chill the pencil in the refrigerator for ten minutes before sharpening in summer, since heat softens the creamy core and makes it crumble. The 24/7 formula is generous with product, so even with regular sharpening a single pencil lasts months of daily use, which keeps the cost per wear well under pricier retractable pencils that cannot be sharpened at all.
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