What is Honest Eyelash Serum?

It is Benton's ampoule serum (10ml). Its own ingredient list names Houttuynia Cordata Extract, Camellia Sinensis Leaf Extract, Sodium Hyaluronate, Panthenol, positioned the way the key-actives panel on this page describes, rather than actives assumed from the product name. It is used after toner and before moisturizer, as the routine's concentrated treatment step.

How do I use Honest Eyelash Serum?

Apply after toner and before moisturizer. Pat or smooth it over a cleansed face and let it absorb before the next step, AM and PM. Keep the same order every time you use it so you can tell what is actually working, and give a new step a few weeks before judging the result.

Is Honest Eyelash Serum the authentic Korean-market formula?

Yes. This listing is Benton's Korean-market formula: the same ingredient list, barcode and batch code as the unit sold on shelves in Korea, rather than a version reformulated for US retail. That is the whole reason to buy a Korean-market brand from a specialist rather than a general retailer.

Where does Honest Eyelash Serum fit if I already use sunscreen or makeup?

Apply Honest Eyelash Serum before sunscreen or makeup, and let it absorb fully first so it does not pill under the next layer. Sunscreen still goes on last in the morning, and makeup after that, regardless of how many treatment steps come before it.

Who is Honest Eyelash Serum suited for?

It is not restricted to any one skin tone or age group. As with any new step, patch-test on the inner arm first if you are new to this formula or to Benton.

Benton

Honest Eyelash Serum

Name: Benton Honest Eyelash Serum
Brand: Benton
SKU: Shopify-8809566991362
Price: 11.76 USD
Availability: InStock

Honest Eyelash Serum is Benton's ampoule serum (10ml), built around Houttuynia Cordata Extract and Camellia Sinensis Leaf Extract. It is used at the end of the evening routine, on clean dry lashes. This is sourced as the Korean-market formula rather than a US-shelf reformulation.

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$11.76

10 ml

$11.76 per 10 ml

Korean-market formula
Ships from California or direct from Korea
Korean barcode and batch code intact

Suited to: NormalCombinationDrySensitive

Helps with: Reactive, easily irritated skin that needs calmingDehydration and a barrier that feels compromisedA concentrated treatment stepBuilding a layered routine

In stock. Arrives in 3 to 7 business days

You’re $100.00 away from free US shipping.

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How it works

Honest Eyelash Serum is an ampoule serum from Benton. Benton is a Korean skincare brand built on short, named-active formulas, running the same core named actives across its toner, essence, cream and serum lines rather than reformulating a new base for each product. On this jar's own ingredient list, Houttuynia Cordata Extract, Camellia Sinensis Leaf Extract, Sodium Hyaluronate, Panthenol, Beta-Glucan are named directly, which is what the key-actives panel on this page is built from rather than from the product name alone. Houttuynia Cordata Extract is heartleaf extract, a calming botanical common in Korean formulas for reactive skin, and it is why this ampoule serum is positioned the way it is. Use it after toner and before moisturizer, as the routine's concentrated treatment step, giving it a minute to settle before the next layer goes on. Benton sells this as the Korean-market formula, the same one stocked on shelves in Korea rather than a version built for the US market.

Key benefits

Houttuynia Cordata Extract is named directly on Honest Eyelash Serum's own ingredient list
Camellia Sinensis Leaf Extract is named directly on Honest Eyelash Serum's own ingredient list
Sodium Hyaluronate is named directly on Honest Eyelash Serum's own ingredient list
Honest Eyelash Serum fits after toner and before moisturizer, as the routine's concentrated treatment step
Benton's Honest Eyelash Serum is sold here as the Korean-market formula: the Original Korean Formula, not a version reworked for US retail
Honest Eyelash Serum keeps the Korean barcode and batch code that print on the unit sold on shelves in Korea

Inside the formula

Ingredients declared

No fragrance

on the list

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37 of 37 explained

Aqua (Water) solvent: Water is the base almost every serum, toner and cream is built on. It dissolves the water-loving ingredients and sets how light the finished texture feels. On an INCI list it is usually first, which only means it is the largest single ingredient by weight.
Butylene Glycol humectant: Butylene Glycol is a small glycol that does two jobs at once: it holds water in the top layer of skin and it dissolves plant extracts and actives that plain water cannot. It also thins a formula, which is why watery Korean essences lean on it.
Palmitoyl Tripeptide-5 peptide: Palmitoyl Tripeptide-5 is a fatted three-amino-acid peptide used for the look of firmness and fine lines. The palmitoyl tail is what lets it cross an oily surface.
Acetyl Hexapeptide-8 peptide: Acetyl Hexapeptide-8 is a six-amino-acid peptide used for the look of expression lines, particularly around the eyes. It is the peptide sold under the name Argireline and is water soluble and stable.
Glycine amino acid: Glycine is the smallest amino acid and one of the free amino acids skin holds to keep water in the outer layer. In a formula it is a humectant and a mild buffer.
Serine amino acid: Serine is one of the most abundant free amino acids in the outer layer of skin, where it helps hold water. Added to a formula it is a humectant.
Glutamic Acid amino acid: Glutamic Acid is an amino acid used as a humectant and a mild pH adjuster. It is one of the components of skin's natural moisturising factor.
Aspartic Acid amino acid: Aspartic Acid is an amino acid used as a humectant and buffer, usually within a wider amino acid blend.
Leucine amino acid: Leucine is an essential amino acid used as a humectant, part of the amino acid block many Korean essences carry.
Alanine amino acid: Alanine is a free amino acid skin uses as part of its own moisture-holding system. In a formula it hydrates and conditions.
Lysine amino acid: Lysine is an essential amino acid used as a conditioning humectant in an amino acid complex.
Arginine amino acid: Arginine is an amino acid that does two jobs here: it holds water in the outer layer of skin, and it neutralises acidic gelling agents, which is why it often stands in for a synthetic pH adjuster.

25 more explained

Tyrosine amino acid: Tyrosine is an amino acid used as a conditioning humectant in amino acid complexes.
Phenylalanine amino acid: Phenylalanine is an essential amino acid used in skincare as a conditioning humectant.
Threonine amino acid: Threonine is an essential amino acid used in skincare as a humectant, normally as part of an amino acid complex rather than alone.
Proline amino acid: Proline is an amino acid abundant in collagen and one of skin's own humectants. Added to a formula it holds water in the outer layer.
Valine amino acid: Valine is an essential amino acid used as a humectant alongside the rest of an amino acid block.
Isoleucine amino acid: Isoleucine is an essential amino acid used as a conditioning humectant within an amino acid complex.
Histidine amino acid: Histidine is an amino acid used as a humectant and a buffer, part of skin's own free amino acid pool.
Methionine amino acid: Methionine is a sulphur-bearing essential amino acid used as a humectant and mild antioxidant.
Cysteine amino acid: Cysteine is a sulphur-bearing amino acid used as a humectant and antioxidant. It is one of the three building blocks of glutathione.
Houttuynia Cordata Extract plant extract: Houttuynia Cordata is heartleaf, and it is one of the two or three anchor plants of Korean calming skincare. Its extract carries quercitrin and other flavonoids and is used for the look of redness and blemish-prone skin.
Camellia Sinensis Leaf Extract plant extract: Camellia Sinensis is the tea plant. Green tea leaf extract carries catechins, among the most studied plant antioxidants, and is used for the look of redness and oily shine.
Betaine humectant: Betaine is a sugar-beet-derived humectant that cells use to hold water. In a formula it hydrates and takes the edge off cleansers and acids, which is why it often appears alongside them.
Sodium Hyaluronate humectant: Sodium Hyaluronate is the salt of hyaluronic acid, and it is what most products labelled hyaluronic actually contain. The salt dissolves more readily and the molecule is smaller, so it sits in the outer layer of skin rather than only on top of it.
Panthenol humectant: Panthenol is pro-vitamin B5: skin converts it to pantothenic acid. It is a humectant that holds water and leaves skin feeling soft and less tight, and it is one of the ingredients formulators reach for when a formula also contains something harsh.
Beta-Glucan polysaccharide: Beta-Glucan is a polysaccharide from oats or yeast. It holds a large amount of water, forms a soothing film, and is one of the ingredients formulators reach for in products aimed at reactive skin.
Glycerin humectant: Glycerin is the most used humectant in skincare. It draws water into the outer layer of skin and holds it there, and it is one of the very few ingredients whose hydrating effect is settled science rather than marketing. Higher amounts feel tacky, which is why it is usually blended.
1,2-Hexanediol humectant: 1,2-Hexanediol is a glycol used for two reasons: it holds water like glycerin, and it makes a formula harder for microbes to live in, so less traditional preservative is needed. Korean formulas use it heavily for that second reason.
Allantoin active: Allantoin is a comfrey-derived compound used to condition skin and soften the outer layer so it feels smoother. It is one of the standard additions to a formula built for easily irritated skin.
Ammonium Acryloyldimethyltaurate/VP Copolymer thickener: This is a synthetic thickener that gels quickly and holds an emulsion stable across a wide pH range. It gives a light, non-tacky body.
Sodium Phytate chelator: Sodium Phytate is a rice-derived chelator used in place of EDTA. It ties up trace metals so the formula stays stable and its colour and scent hold.
Sodium Citrate pH adjuster: Sodium Citrate is the salt of citric acid, used as a buffer: it holds a formula at a steady pH rather than pushing it in one direction. It is also a mild chelator.
Citric Acid pH adjuster: Citric Acid is used in tiny amounts to bring a formula to the pH its actives need, not as an exfoliant at that level. It is an AHA, so at much higher concentrations it can also exfoliate.
Hydroxyacetophenone preservative booster: Hydroxyacetophenone is an antioxidant that also strengthens a preservative system, so a formula needs less traditional preservative. Korean formulas pair it with 1,2-hexanediol constantly.
Pentylene Glycol humectant: Pentylene Glycol hydrates and, like the other longer-chain glycols, makes a formula less hospitable to microbes so the preservative system can be lighter. It also improves how evenly a product spreads.
Caprylyl Glycol preservative booster: Caprylyl Glycol is a glycol that conditions skin and, more importantly, strengthens a preservative system so less of the traditional preservative is needed. It appears in most modern formulas built without parabens.

How to use

Use the Honest Eyelash Serum at the end of the evening routine, on clean dry lashes.
One pass of the applicator along the upper lash line, the way a liquid liner goes on. One coat is the dose, and a second pass over the same lashes does not add to it.
Everything else in the routine goes on first. The lashes need to be clean and completely dry when it goes on, because eye cream, oil or leftover mascara gives it a film to sit on instead of the lash line.
Once a day, in the evening. Do not run it along the waterline or let it into the eye itself; the base of the lashes is the closest it belongs.

Worth knowing

New to this formula or to the brand: patch-test on the inner arm and wait a day before applying it to the face.
Discontinue use and rinse the area with water if redness, itching or irritation develops.

Complete the routine

This itemBenton Honest Eyelash Serum$11.76
Cleanse first, so the next step meets bare skinBenton Honest Cleansing Foam 150g$15.00
An as-needed step, in place of the prep layerBenton Snail Bee High Content Sheet Mask 20g X 10ea$45.00

Total for 3 items$71.76

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Benton, Korean-market original