Score computed from verified review sentiment, ingredient efficacy, and cross-platform consistency.
Reviewed by Flash AI Editorial Team · Last updated March 2026.
Users consistently praise the MARS Ink Black Liquid Eyeliner Pen for its intensely rich and bold black pigment, which provides a striking and defined eye look. The formula is described as being very pigmented, delivering a deep black color that stands out.
The fine, pointed felt tip of this eyeliner is highly regarded for its precision, allowing users to create both thin, delicate lines and sharp, dramatic wings with ease. This precision makes application smooth and quick, even for intricate designs.
The eyeliner is noted for its quick-drying formula that sets fast, preventing smudging throughout the day. This characteristic is highly valued by users who need a reliable liner that stays in place without transferring.
Users report that the MARS Ink Black Liquid Eyeliner Pen is long-lasting and stays put throughout the day without fading or smudging, making it a dependable choice for extended wear. Some users have even made it a second purchase due to its performance.
While often described as waterproof, some users have experienced issues with the eyeliner not being entirely waterproof or long-lasting, particularly in humid conditions. There are also mentions that it might bleed for those with oily skin types.
There's a concern that if the eyeliner cap is not closed tightly, the product can dry out quickly. This requires users to be diligent about sealing the pen to ensure its longevity and prevent it from becoming unusable.
Flash AI analyzes thousands of reviews across Amazon, Nykaa, YouTube & Reddit, etc. to give you one honest score — and finds you the best price in India.
The Mars Ink Black Liquid Eyeliner Pen is a matte-finish, waterproof liner built for precise application and all-day wear. It comes in a 1 ml felt-tip pen format with a sketch formulation and delivers deep black pigment in a single stroke. Across 441 verified reviews on 5 platforms, this pen earned an AI Score of 88 out of 100 from Flash AI, with particular strength in pigmentation (95) and precision tip (90). You can find it across 10 sellers at prices between ₹189 and ₹329, making it one of the more accessible options in the liquid liner category.
Mars uses a liquid sketch formulation in this pen, dispensing it through a fine felt tip. The tip responds to pressure, so you can draw thin hairlines with a light touch and build up to bolder strokes with more pressure. The matte formula dries fast, which reviewers consistently credit for its smudge-free performance throughout the day. The product carries a waterproof label and a 12-hour wear claim per the product specs. The concentrated ink-black pigment covers in a single stroke, and the formula targets fine lines around the eye to prevent bleeding.
This eyeliner suits most skill levels, from first-time users who want a stable felt tip to experienced users who need to draw precise wings quickly. Those with dry to normal skin in low-to-moderate humidity environments tend to get the best results. Reviewers with oily skin or those in high-humidity climates report inconsistent waterproofing, with some noting that the liner bleeds or fades under those conditions. You also need to close the cap firmly after every use. An open cap causes the product to dry out and become unusable, so stay diligent about sealing the pen.
At ₹189 at its lowest, the Mars Ink Black Eyeliner delivers strong value for daily use. Reviewers highlight the pigmentation and tip precision as its best qualities, and the rose-gold packaging makes it a presentable gift option. The Flash AI score of 88 out of 100 reflects high marks in colour payoff and precision, while the longevity score of 85 captures honest reviewer feedback about humidity performance. For anyone who wants a reliable, bold black liner at a budget price, this pen earns its place in your kit. Oily skin users and those in very humid climates should carry a touch-up option.
"With a Flash AI Score of 88/100, Mars Ink Black Liquid Eyeliner Pen 1Ml earns its ranking through demonstrated, cross-platform results."
— Flash AI Editorial TeamMars is an Indian cosmetics and beauty brand offering a wide range of affordable makeup products including primers, lipsticks, and brush sets. Known for their budget-friendly pricing and everyday makeup essentials with oil-control formulations, the brand caters to women looking for accessible colour cosmetics without a premium price tag. Mars products are widely available across major Indian marketplaces including Nykaa, Amazon, Flipkart, Myntra, Meesho, and Purplle.
"I recently purchased this eyeliner and I?m really happy with how it performs. The formula is smooth and easy to apply giving a sharp precise line in just ..."
"Not bold black Smudge proof but not water Liquid liner so thickness was not there"
"This eyeliner is amazing! The black is super bold and stays put all day without smudging. It?s easy to apply with a smooth finish and I love that it doesn?t ..."
Start from the inner corner of your upper lash line and draw toward the outer edge in short, controlled strokes. The felt tip responds to pressure, so press lightly for a thin line and increase pressure for a bolder look. For a wing, extend the line at the outer corner and connect it back to the lash line. Allow a few seconds for the liner to dry fully before opening your eyes.
Users with dry to normal skin report strong, consistent performance throughout the day. If you have oily skin, some reviewers note that the waterproofing can be inconsistent, with a few reporting that the liner bleeds in oily conditions. Applying an eyeshadow primer on your lids before use may help extend wear time and reduce the chance of bleeding.
The sketch formulation refers to the felt-tip delivery system used in this pen, which dispenses liquid ink through a flexible felt nib, similar to a sketch marker. This design gives you clean, controlled lines per stroke. It offers more precision per application than a traditional soft brush-tip liner.
The liner delivers full-intensity black pigment in a single stroke, so results appear immediately on application. According to the product specs, wear time extends up to 12 hours. Reviewers confirm the colour holds well without fading under normal conditions, though performance in high-humidity settings can vary.
The product carries a waterproof label in the specs, but reviewer feedback indicates that performance in humid conditions can be inconsistent. Some users in high-humidity environments or with oily skin have reported fading or bleeding. In those conditions, setting the liner with a dark eyeshadow powder on top may help improve staying power.
A liquid liner pen like this delivers a sharper edge and a more intense matte finish than a typical pencil or kajal. The felt tip provides stronger colour payoff per stroke, and the dried line holds its definition without smudging. Pencil liners offer more blendability, but they rarely match the precision and clean edge a liquid pen provides.
The Mars Ink Black Liquid Eyeliner Pen is available across 10 online sellers, with prices starting from ₹189. Comparing prices across major Indian e-commerce platforms before you buy helps you find the best available deal, as prices vary between sellers up to ₹329.
The liner applies as a liquid and dries quickly to a flat, non-shiny matte finish. Once set, it feels light on the lid and does not feel heavy or uncomfortable throughout the day. Reviewers describe the dried liner as bold and striking, suitable for both daytime and evening looks.
The specs do not include an ophthalmologist-tested or contact-lens-safe certification for this product. As a general precaution, insert your contact lenses before applying eye makeup and draw the liner along the upper lash line rather than the waterline. If you notice any irritation, stop use and consult an eye care professional.
A micellar water or an oil-based makeup remover works well on matte liquid liners. Soak a cotton pad and hold it gently against the liner for a few seconds before wiping, rather than rubbing, to avoid irritating the skin around the eye. A regular face wash alone may not break down the waterproof formula fully.