Urban Decay 24/7 Inks Water-Resistant Liquid Eyeliner Pen Review: Pros, Cons & Rumors Debunked

Urban Decay 24/7 Inks Liquid Eyeliner Pen, Water-Resistant, Smudge-Resistant, Fine Tip, Ergonomic Precision Grip, Matte and Shimmer Finishes – 0.01 fl oz

Unleash your inner artist with Urban Decay 24/7 Inks Liquid Eyeliner. The ergonomic precision grip and ultra-sharp tip deliver chaos-proof, water- and smudge-resistant lines for all-day wear.
Shake to activate the life-proof formula and unleash ultra-intense color in 9 matte and shimmer shades. Its ultra-fine, flexible tip draws smooth thin or bold lines—smudge- and water-resistant.

The Urban Decay 24/7 Inks Liquid Eyeliner delivers outstanding precision and vibrant long-lasting color for most users.
Common complaints center on drying out too quickly and occasional inconsistent flow between batches.
No widespread evidence supports serious health rumors about toxic nanoparticles in the formula.
Overall, the product is recommended for those seeking a smudge-resistant and ergonomic fine-tip pen liner, with caution about shelf life.

Inspired by professional tools, ergonomic design with precise tip.
Life-proof formula boasts water-resistance and smudge-proof wear.

Table of contents

Product Overview
Urban Decay 24/7 Inks Liquid Eyeliner Review: Honest Findings
Positive Feedback & Highlights
Negative Reviews & Rumor Analysis
Who Should Consider Urban Decay 24/7 Inks Liquid Eyeliner?
Conclusion: Final Verdict

Product Overview

Urban Decay’s 24/7 Inks Liquid Eyeliner Pen channels the look and feel of a professional paint brush into a convenient pen format. Its ultra-sharp tip and patented grip are crafted to help both beginners and experts achieve crisp lines, from subtle accents to dramatic wings. The water-resistant, smudge-proof formula promises all-day performance, even in humid conditions or during workouts. Available in matte and shimmer finishes across nine intense hues, the 0.01 fl oz pen delivers a concentrated flow-through system. Users are instructed to shake well before use, ensuring saturation of the flexible felt or brush tip for uninterrupted color payoff.

This product is positioned as a premium option in the eyeliner market, with a suggested retail price reflecting its designer brand status. The pen’s ergonomic barrel offers added stability, addressing common user frustrations of wobbly application. Urban Decay emphasizes the precision grip to minimize mistakes and latency in the dye discharge, delivering a steady, opaque line on the first stroke.

Balanced mix of pros and cons from real users.
High praise for longevity; isolated flow issues noted.

Urban Decay 24/7 Inks Liquid Eyeliner Review: Honest Findings

Drawing insights from dozens of user reviews, the Urban Decay 24/7 Inks pen largely earns stellar ratings for its vivid color payoff and durability. A significant portion of users applaud its quick-drying, comfortable wear that withstands sweat, rain, and long workdays without transferring or fading. A handful of outliers, however, highlight concerns over premature drying and occasional clumping when layering. The majority consensus affirms that when freshly opened and properly shaken, the liner glides smoothly without tugging on the delicate eye area.

Most positive reviewers describe a consistent, flawless application for at least 4–6 months of daily use, while negative voices often report first-week or first-use disappointments. There appears to be variation in batch consistency, with some pens arriving nearly dried out from the factory. Such reports seem concentrated among purchases made from third-party sellers rather than direct from Amazon or Ulta, suggesting supply chain or storage issues may play a role.

Precision applicator and intense pigment delight most users.
Waterproof performance excels under normal conditions.

Positive Feedback & Highlights

Many beauty enthusiasts name the 24/7 Inks pen as their “go-to eyeliner” thanks to its ultra-fine felt tip or brush option. Reviewers consistently state that the pen’s design “feels like an artist’s tool,” enabling clean, sharp wings without skipping. The ergonomic barrel reduces hand fatigue, making it easier to draw one continuous stroke rather than multiple starts and stops.

Color Intensity & Longevity

Users rave about the rich, opaque pigment that goes on in a single swipe and remains unfazed by humidity or accidental rubs. “It stays where you put it,” one customer reports after a strenuous workout, while another notes six months of daily use before depletion. The formula’s waterproof and smudge-proof properties earn repeated praise, especially in darker shades like Oil Slick and Whiskey Brown.

Comfort & Dry-Down Time

Quick-drying action prevents transfer onto eyelids and mascara. Reviewers characterize the sensation as “lightweight” and “barely there,” reducing the typical stinging or pulling sensation associated with liquid liners. Even sensitive eyes find this pen comfortable, with only a small minority reporting mild irritation.

Frequent reports of pens drying out prematurely.
A few rumor claims of nanoparticles penetrating skin lack corroboration.

Negative Reviews & Rumor Analysis

Despite widespread acclaim, a notable segment of reviewers raise concerns over inconsistent quality. The chief complaint: the liner runs dry after minimal uses. Several users claim their pens stopped dispensing pigment within a week or two, leaving a nearly empty tip. Others mention uneven flow that clumps or drags, especially when attempting to double-up lines for more opacity.

Dry-Out & Clumping Issues

This issue seems most pronounced in pens purchased from third-party sellers on Amazon. Direct purchases from Ulta or Sephora tend to yield better reliability, suggesting storage conditions or age may degrade performance. Users recommend shaking vigorously each time and storing the pen tip down to maintain tip saturation.

Design Flaws & Ergonomics

A handful of users dislike the pen’s length, stating the extended barrel can hit their mirror during application. Vision-challenged customers find themselves forced to angle the pen awkwardly, impacting precision. A couple of reports even note the tip assembly separating from the barrel on first use, although these appear to be isolated manufacturing defects.

Rumor Investigation: Nanoparticle Health Claims

One user posted a claim that “nano particles penetrate the skin and are not good for you,” rating the product “8/100.” No corroborating evidence or reputable studies support this assertion. Urban Decay’s ingredient list is transparent, and no known toxic nanoparticulate additives appear on it. Industry experts and dermatologists consulted by third-party publications have not flagged any serious health concerns tied to this eyeliner. In the absence of peer-reviewed data, this remains an unverified rumor.

Analyzing the Authenticity of Complaints

While the drying-out complaints are consistent enough to warrant caution, most other negative points are anecdotal outliers. The rumor of harmful nanoparticles seems to stem from a misinterpretation of cosmetic science. Urban Decay adheres to stringent FDA guidelines, and no consumer safety alerts or FDA actions have been issued against the 24/7 Inks line.

Ideal for makeup artists and eyeliner enthusiasts seeking precision.
May frustrate users prone to liner waste or storage mishandling.

Who Should Consider Urban Decay 24/7 Inks Liquid Eyeliner?

This pen liner is tailored for those prioritizing fine-line accuracy and intense pigmentation. If you routinely craft intricate wings or graphic liner art, the ultra-fine tip and ergonomic grip are major assets. Fans of water-resistant formulas who dislike midday smudges will appreciate the seal-like wear, provided the pen remains adequately primed.

However, if you:

Store cosmetics in fluctuating temperatures or infrequently shake pens, you may encounter drying-out issues.
Prefer retractable or shorter barrels, the long pen shape may obstruct your view.

A trial run with a trusted retailer’s return policy is advisable. Purchasing directly from Urban Decay–authorized channels reduces the odds of receiving an aged or compromised unit.

Outstanding precision and color payoff outweigh isolated negatives.
No reliable evidence supports serious rumors of health hazards.

Conclusion: Final Verdict

In summation, the Urban Decay 24/7 Inks Liquid Eyeliner Pen earns high marks for performance and design ingenuity. Its combination of a fine-tip applicator, ergonomic grip, and water-smudge resistance fulfills the demands of both everyday users and makeup professionals. Occasional reports of premature dryness and supply inconsistencies warrant attention but do not overshadow the overwhelmingly positive feedback. The one-off nanoparticle rumor lacks factual basis and should not deter potential buyers.

For those committed to precision liner work and vibrant, long-lasting color, this eyeliner remains a strong contender. Be mindful to purchase from reputable vendors, store the pen tip down, and shake before each use to maximize lifespan. On balance, Urban Decay’s 24/7 Inks pen is a reliable choice for crisp, bold eye looks that stay put.