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4.5
263 reviews
Rating breakdown
Most-mentioned keywords
Why consumers buy
Mascara alternative for daily/no-makeup days
Many buyers purchase it specifically to replace regular mascara on 'no makeup' or low-effort days, valuing that it tints lashes subtly without looking heavy.
Lash perm/lash lift maintenance
A very large share of reviewers use it after eyelash perms to maintain curl and add color without the reported curl-flattening effect of regular mascara.
Repurchase/brand loyalty
Numerous reviewers mention this is their 2nd, 3rd, or 5th+ tube, and many already used COSNORI's clear serum before trying the black tinted version.
Influencer/celebrity and word-of-mouth recommendation
Several reviews cite YouTubers, a Korean drama (Transit Love/Exchange), or friend recommendations as the reason for first trying the product.
Promotional gifts and collab packaging
Many purchases, especially during sales, were driven by cute bundled freebies (Pingu hair clips, mirrors, lash combs) rather than the product itself.
How they use it
Applied in the morning as a mascara substitute
Most users apply it during their daytime makeup routine in place of, or occasionally under, regular mascara.
Skin concerns raised — and how the product addressed them
✓Many reviewers report the serum helps maintain curl and reduces breakage after lash perms or use of eyelash curlers, though effectiveness varies.
✓Several long-term users report lashes appearing longer, fuller, or stronger after weeks of daily use, though results are inconsistent and unconfirmed by most.
✓Most sensitive-eye users report no irritation and cite it as gentler than regular mascara, but a small minority experienced itchiness or allergic reactions.
Sentiment breakdown
Share of analyzed reviews by overall sentiment.
Used with eyelash perm/curl routines
Frequently applied after a lash perm to preserve curl and provide slight color without heavy product buildup.
Layered with mascara or lash serum
Some apply the clear COSNORI serum at night and the black tinted version during the day, or use it as a base coat under mascara for extra length.
Applied to lash extensions
People with eyelash extensions use it to darken and define lash bundles since regular mascara isn't extension-safe.
Daily, ongoing use for lash health
Reviewers describe applying it every day, citing gradual improvements in lash strength or length over weeks of consistent use.
✓The majority say the product does not transfer or smudge under the eyes, though a few note issues if it hasn't fully dried before blinking.
✓A minority of reviewers felt the formula left lashes feeling dry post-application, an unresolved complaint rather than a benefit.
Concerns and outcomes summarized from reviews; percentages are approximate.
