Urban Decay Waterline Eye: Mushroom Vs Corrupt Compared

Mushroom and Corrupt take waterline eye makeup in opposite directions, brightening versus deepening. We compared their effects, versatility and best uses to help you pick your look.
| Factor | Urban Decay 24/7 Glide-On Waterproof Eye | Urban Decay 24/7 Glide-On Waterproof Eye |
|---|---|---|
| Effect | Mushroom brightens and opens the eyes with metallic taupe-pewter shimmer. | Corrupt adds mysterious depth with dark red-brown shimmer. |
| Best eye colors | Mushroom flatters all eye colors with universal brightening. | Corrupt makes green and hazel eyes glow with warm contrast. |
| Daytime wear | Mushroom looks fresh and polished for everyday wear. | Corrupt reads bolder and suits evenings better. |
| Versatility | Mushroom doubles as an inner-corner highlighter and brow bone shade. | Corrupt works as a smoky liner and eyeshadow base too. |
| Best for | Mushroom suits anyone wanting bigger, brighter-looking eyes. | Corrupt suits those wanting sultry depth and color contrast. |
Our Verdict
Mushroom wins for everyday waterline eye makeup. Its brightening shimmer flatters every eye color and occasion. Choose Corrupt when you want sultry depth and striking contrast, especially on green or hazel eyes. Many beauty lovers keep both: Mushroom for day, Corrupt for night.
More Top Picks in This Category
Not sold on either of these two? Here are more bestselling options worth considering.

Best for: Soft smoky waterline definition.
Urban Decay 24/7 Glide-On Waterproof Eyeliner Pencil, Smoke (Deepest Matte Gray)
- Deepest matte gray waterline shade
- Soft smoky alternative to black
- 16-hour waterproof wear
- Creamy hydrating formula
Pros
- Smoky without harshness
- Great for blue eyes
Cons
- Less intense than black
- Needs sharpening
Want the Full Picture?
Waterline vs Tightline: Where This Pencil Actually Goes
Most buyers use waterline and tightline interchangeably, but they are different placements with different results. The waterline is the wet inner rim of the lower lid, while tightlining fills the upper lash roots between the lashes. The Smoke pencil in its deepest matte gray works for both, yet each placement asks something different of the formula. On the waterline, the challenge is staying power against tears and blinking, which is where the 16-hour waterproof claim gets tested. Tightlined into the upper lash roots, the same pencil behaves like a lash thickener, since the creamy formula grips the drier skin between lashes far longer than it survives the wet rim.
For tightlining, look down into a hand mirror, gently lift the upper lid, and press the pencil into the lash roots in short stamps rather than one long drag. Short stamps deposit more pigment with less tugging, and tugging is what makes eyes water and ruins the line before it sets. Give the line thirty seconds to set before blinking normally. If tightlining feels fiddly with a pencil, a liquid pen gives more control for the same placement, and the Clinique Pretty Easy liquid guide explains the beginner-friendly technique.
Brightening the Eyes: When to Reach for Mushroom
Mushroom is the brightening half of this comparison, a soft light shade that opens the eye instead of defining it. Light liner on the lower waterline is the oldest bright-eye trick in makeup: it neutralizes the redness of the inner rim, which makes the whites of the eyes look whiter and the whole eye look larger and more awake. It works best on days when you look tired, on small or deep-set eyes that benefit from an opening effect, and under heavy eye makeup where a dark lower waterline would close everything down.
The mistake is treating light waterline liner as a full substitute for definition. Mushroom brightens but it does not define, so pair it with real liner on the upper lash line, otherwise the eye looks washed out rather than awake. Keep the light shade strictly on the waterline itself, not below it on the skin, where it reads as concealer gone wrong. One clean pass is enough: layering light pencil builds up a waxy ridge that flakes by afternoon.
Waterline Liner for Contact Lens Wearers
The waterline sits almost touching the lens, so lens wearers face the highest migration risk of any eyeliner placement. Even waterproof formulas like this Smoke pencil shed microscopic pigment with blinking, and body heat softens the line through the day. The practical order is lenses first, makeup second, so no pigment transfers from fingers to lens during insertion. At night, remove lenses before removing makeup, because remover and dissolved liner washing over a lens causes the burning and blurriness lens wearers know well.
If your eyes water with waterline liner, switch the dark shade to the tightline and keep only the brightening shade on the lower waterline, since light pigment migrating causes less visible irritation and redness than dark. Redness within an hour of application usually means the formula irritates your eyes, while watering that starts in the afternoon usually means the line has migrated. For eyes that react to most pencils, our kajal guide for sensitive eyes covers formulas built for reactive eyes.
The Lower Lash Line Without the Raccoon Effect
Corrupt takes the waterline in the deepening direction, and deep shades on the lower rim are where raccoon eyes begin. The prevention routine has three parts. First, keep the dark pencil on the waterline and the lash roots, not on the skin below the lashes, since skin holds migrating pigment while the wet rim sheds it with tears. Second, set the line: press a matching dark eyeshadow over the lower lash line with a small flat brush, which locks the cream in place. Third, skip heavy under-eye cream in the morning, because rich cream creeps down and gives the pigment a slippery surface to travel on.
Check the outer corners around midday, since migration always shows there first. A cotton swab, not a finger, cleans up smudging without dragging the rest of the makeup. On very long days, the deepest matte gray in a glide-on formula holds better than most, and our Urban Decay 24/7 Glide-On guide details how the full shade range performs on the waterline through real wear.