Gel Liner vs Waterproof Eyeliner: ILIA Clean Formulas Compared

When it comes to defining your eyes, the right eyeliner can make all the difference. But with so many formulas on the market, choosing between a gel liner and a waterproof liquid liner can feel overwhelming. If you're committed to clean beauty, ILIA offers two standout options: the Clean Line Gel Liner and the Thru Line Waterproof Eyeliner. Both deliver rich color and precise application, yet each excels in different scenarios.

In this guide, we'll break down the key differences between these two eyeliners, from texture and finish to longevity and best-use cases. Whether you're a waterline enthusiast or a winged-liner devotee, you'll leave with a clear winner for your makeup bag.

Understanding the Formulas: Gel vs. Waterproof Liquid

The Clean Line Gel Liner is a creamy, smudgeable gel pencil that glides on effortlessly. Its emollient-rich texture allows for easy blending during the first few seconds after application, making it ideal for creating soft, smoky looks. Once set, it offers impressive staying power without feeling tight or dry.

On the other hand, the Thru Line Waterproof Eyeliner is a high-pigment liquid liner with a precision felt-tip applicator. It dries down to a budge-proof, transfer-resistant finish that withstands tears, sweat, and humidity. This formula is your go-to for sharp wings and graphic lines that need to last all day and night.

• Gel liner: creamy, blendable, soft-focus finish
• Waterproof liquid: intense, matte, long-wearing

Best Uses: Waterline, Tightline, and Winged Looks

If you love defining your waterline, the Clean Line Gel Liner is your best friend. Its creamy texture adheres comfortably to the delicate inner rim of the eye, delivering a rich wash of color without tugging. It's also excellent for tightlining—the technique of lining the upper waterline to make lashes look fuller.

For winged eyeliner, the Thru Line Waterproof Eyeliner's fine tip offers ultimate control. You can draw a precise flick or a bold graphic shape with ease. Its waterproof formula ensures your wing stays intact through long days, workouts, or even a tear-jerking movie.

• Use gel liner for waterline and tightline definition
• Use waterproof liquid for winged and graphic eyeliner looks

Longevity and Wear: Which Lasts Longer?

When it comes to all-day wear, the Thru Line Waterproof Eyeliner is the undisputed champion. Its waterproof, smudge-proof formula is designed to stay put for up to 12 hours without fading or flaking. This makes it the perfect choice for events, travel, or humid climates.

The Clean Line Gel Liner also boasts impressive staying power, especially when set with a matching eyeshadow. However, because of its blendable nature, it may not hold up as well on the waterline for those with oily lids. If you need a liner that can survive a swim or a good cry, reach for Thru Line.

• Thru Line: waterproof, smudge-proof, up to 12 hours
• Clean Line: long-wearing but best set with powder

Application Tips for Each Formula

For the Clean Line Gel Liner, start by warming the tip with the back of your hand for a creamier glide. Use short, feathery strokes along the lash line, and if you make a mistake, quickly smudge it with a brush before it sets. For a smoky eye, apply and blend within 30 seconds.

For the Thru Line Waterproof Eyeliner, shake well before use. Rest your elbow on a flat surface for stability, then draw your wing in small, connected strokes. If you mess up, use a cotton swab dipped in makeup remover to correct—once dry, it won't budge.

• Gel liner: blend quickly for smoky effects
• Waterproof liquid: allow to dry completely before blinking

Clean Beauty and Skin-Friendly Ingredients

Both eyeliners are formulated without harsh chemicals like parabens, sulfates, and phthalates, aligning with ILIA's commitment to clean beauty. They are also cruelty-free and suitable for sensitive eyes, including contact lens wearers.

The Clean Line Gel Liner is enriched with nourishing oils that condition the delicate eye area, while the Thru Line Waterproof Eyeliner includes film-forming polymers that provide flexible, comfortable wear. You can feel good about what you're putting on your skin.

• Free from parabens, sulfates, and phthalates
• Cruelty-free and sensitive-eye friendly

How to Choose: A Quick Comparison

Still torn? Consider your daily routine and desired look. If you prefer a soft, diffused definition and love playing with smoky eyes, the Clean Line Gel Liner is your match. If you're all about precision, longevity, and bold graphic lines, the Thru Line Waterproof Eyeliner is the way to go.

Many makeup enthusiasts find that having both in their collection is the ultimate solution. Use the gel liner for everyday definition and the liquid liner for special occasions. Pair them with the The Necessary Eyeshadow Palette to create endless eye looks.

• Choose gel liner for blendable, soft-focus definition
• Choose waterproof liquid for precise, long-lasting wings

Ultimately, the best eyeliner for you depends on your personal style and needs. Both the Clean Line Gel Liner and the Thru Line Waterproof Eyeliner are stellar clean beauty options that deliver on performance. If you're ready to elevate your eye game, explore the Clean Line Gel Liner for a creamy, blendable finish that's perfect for everyday wear.