Eyes

Gel Liner Onyx

3g / .106 oz

Onyx is our deep black matte gel liner—intensely pigmented and microplastic-free. Designed to create ultra-precise lines or softly smudged edges, it glides on effortlessly and sets to a long-lasting finish. This water-based liner sets to stay in place all day without smudging or fading.

Rated 4.4 out of 5
Based on 92 reviews

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Benefits

Intense, Rich Pigment

Onyx delivers a deep, matte black finish that instantly defines and amplifies the eyes.

Versatile Application

Create precise lines, smudged smoky looks, or a soft lash-defining effect—all with a single product.

Long-Lasting

Once set, it stays in place all day without smudging or fading.

Water-Based & Microplastic-Free

aligned with Aleph’s clean, sustainable standards.

Nourishing & Protective

With a plant-based film former that creates a flexible yet lasting hold, it’s kind to the delicate eye area.

Easy to Remove

The water-based formula makes it effortless to remove at the end of the day.

Ingredients

Hero Ingredients

  • Raspberry Ketone

    Traditionally used in Chinese medicine and the Ayurvedic tradition of India, this natural antimicrobial acts as strong antioxidant and free radical scavenger and helps to protect the elasticity of the skin.

  • Ricinus Communis (Castor) Seed Oil (Organic)

    A thick plant oil high with a low molecular weight to penetrate the skin easily for added skin softening.

Full List

Water/Aqua, *Copernicia Cerifera (Carnauba) Wax, Pullulan, Oleic Acid, Palmitic Acid, Propanediol, Stearic Acid, Capryloyl Glycerin/Sebacic Acid Copolymer, Glyceryl Stearate SE, Glyceryl Rosinate, Hydrogenated Olive Oil, Ricinus Communis (Castor) Seed Oil, C13-15 Alkane, Sorbitol, Phenethylalcohol, Sucrose Polystearate, Heptyl Undecylenate, Glyceryl Behenate, Raspberry Ketone, Glyceryl Caprylate, Sodium Hydroxide, Stearoyl Glutamic Acid, *Totarol, Acacia Senegal Gum, Polyhydroxystearic Acid, Cetyl Palmitate, Tocopherol, Glyceryl Undecylenate, Trehalose, Helianthus Annuus (Sunflower) Seed Oil, Iron Oxide (CI 77499). *Organic

Pro Tips

Subtle/Tightline

An invisible liner to define the eyes.

Using Aleph Liner/Brow Brush, press Gel Liner Onyx into the base of the lashes along the length of the lash line on the lid - Always apply to the skin and avoid the water line.

Line

To intensify any eye look

Using Aleph Liner/Brow Brush, press Gel Liner Onyx along the upper lash line from the inner most lashes to the outer lashes gently gliding the brush along to create the desired thickness.

Wing/Graphic

Create an upturned elongated eye Starting from either the inner lashes or the lashes above the inner edge of the iris, using Aleph Liner/Brow Brush, press Gel Liner Onyx into the base of the lashes, then gradually build to a thicker line at the outer corner. Position Liner/Brow brush at an angle following the up curve of under eye lashes to mark the wing, then meet with the outer thickness of the line.

Pair With

 
Liner/Brow Brush
Tools

£18

 
Prep/Finish
Powder

£31

Gel Liner Onyx

Aleph Liner/Brow Brush
New Aleph Lift/Lengthen Mascara
Aleph Hybrid Eye Pigment Echo

Flicker

Liner/Brow Brush

Flicker

Lift / Lengthen Mascara

Flicker

Hybrid Eye Pigment: Echo

Pair with

average rating 4.4 out of 5
Based on 92 reviews
  • 5 Stars
    70 Reviews
  • 4 Stars
    5 Reviews
  • 3 Stars
    8 Reviews
  • 2 Stars
    5 Reviews
  • 1 Star
    4 Reviews
82% of reviewers would recommend this product to a friend
92 Reviews
Reviewed by Tracey B., from New Zealand
Verified Buyer
I recommend this product
Age Range
55 - 64
Skin Type
Balanced
Rated 5 out of 5
Review posted

Gel liner goodness

Beautiful product

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Reviewed by Susan W., from United States
Verified Buyer
I don't recommend this product
Age Range
65+
Skin Type
Balanced
Rated 2 out of 5
Review posted

Gel liner

Too difficult to apply smoothly.

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Aleph Beauty

Hi Susan, thanks for your feedback. I see that our team has responded to your review with tips to get the most out of your Gel Liner Onyx. I hope it works on you this time. 😊

Reviewed by Bridget, from New Zealand
Verified Buyer
I recommend this product
Age Range
45 - 54
Skin Type
Combination
Rated 5 out of 5
Review posted

Love this!

I have many Aleph products and the gel liner is one of my favourites. This is my 2nd purchase of the gel liner, for me this is a keeper! The Aleph eye gel stays in place ALL DAY! I love it on my top lash line and I wear it very lightly on my lower lash line. I use it with the aleph eye liner brush for the perfect application.

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Reviewed by kay l., from New Zealand
Verified Buyer
I recommend this product
Age Range
65+
Skin Type
Balanced
Rated 5 out of 5
Review posted

Gel Liner Onyx

My friend said I should buy the eye liner. I'm 73 and can't be bothered fidling about with eye makeup 😂 I just like a bit of Radiance and your mascara.

Now that I've tried it I'm very happy, not too heavy and easy to apply. Certainly makes an improvement.

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Reviewed by Karen F., from United States
Verified Buyer
Age Range
45 - 54
Skin Type
Oily
Rated 3 out of 5
Review posted

Too harsh for me.

I love the staying power of this product but the color looks too harsh on me. The hybrid eye pigment doesn’t last more than a couple hours on me even when prepping with the powder. I’d love to see a brown gel eyeliner. That would be perfect.

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Aleph Beauty

Thanks so much for your feedback, Karen. We’ve passed your suggestion for a brown gel liner on to our product team. We also see that our team has reached out via email to offer support with the eye pigment wear time.