What is the difference between the two ends?

One end has a fine calligraphy tip for precise points and thin lines. The other has a brush for fluid, thicker strokes and wing tips.

Yes, it is formulated as waterproof and long-wearing. It is also fragrance-free and free of sulfates and parabens.

How long does it last once opened?

The period after opening is six months. The pen holds 0.8 ml of liquid liner.

Can I use it on sensitive or acne-prone skin?

It is listed as suitable for sensitive, acne-prone, oily, dry, combination, mature and normal skin.

Is it matte or glossy?

The shade is the deepest black with a glossy finish, though the effect is described as defining and matte in places. Expect a slight sheen rather than a flat matte.

It is made for the upper lash line. Use the tip for classic sleek lines and the brush for dramatic wings or a sultry doe eye.

Where is the Eye Defining Pen cheapest?

At Whatnot, for $35.00, 49% under what the other stores charge, as of our latest check.

What do buyers say about the Eye Defining Pen?

Rated 4.7 out of 5 from 1,934 ratings.

Where can I buy the Eye Defining Pen?

15 stores we checked sell it, including Whatnot, Depop, eBay, Walmart, Tom Ford Beauty.

Eye Defining Pen Price History: $35.00 at Whatnot, 49% Under Others

What reviewers say

4.7 / 51,934 ratings

With 1,934 ratings averaging 4.7 out of 5, owners mostly praise the depth of the black and the precision of the two tips. Complaints center on how fast the pen dries out and on the glossy finish.

What people mention

PigmentPraisedOwners say the black is deep and opaque in a single pass.
PrecisionPraisedThe fine calligraphy tip is praised for sharp, controlled wing tips.
LongevityMixedMany say it lasts all day, but others find it dries out before the pen is used up.
ValueCriticisedReviewers note the small volume and short use window make it run out fast.
FinishMixedSome like the glossy sheen; others wanted a flat matte line.

From Bluemercury

Dual-ended liquid eyeliner with a fine calligraphy tip on one end and a brush on the other
Formulated in the blackest shade of black
Delivers ultimate precision and makes fluid strokes easy to achieve
Creates a spectrum of effects from classic sleek lines to dramatic wing tips or a sultry doe eye
Travel size
Suitable for acne-prone, combination, dry, mature, normal, oily and sensitive skin

Sizes: 0.03 oz
Materials: water (aqua), butylene glycol, ammonium acrylate copolymer, ethanol, acrylate copolymers, 1,2-hexane diol, tocopherol, phenoxyethanol, [+/- carbon black, mica,
Returns: Bluemercury.com purchases can be returned free of charge to your local store or by mail within 90 days of purchase; exchanges may only be completed in-store.
Shipping: BlueRewards members receive free standard shipping on all orders.

About the Eye Defining Pen

It can create classic sleek lines, dramatic wing tips or a sultry doe eye. It is applied along the upper lash line and is long-wearing and waterproof.

Shade: 01 Deeper, the deepest shade of black
Form: Liquid eyeliner pen
Application area: Upper lash lines
Wear: Long-wearing, lasts all day
Effect: Defining
Formula: Waterproof, fragrance-free, sulfate-free (no SLS or SLES), paraben-free, phthalate-free, mineral oil-free
Use: Sultry doe eye, classic sleek lines, dramatic wing tips
Period after opening: 6 months