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Best Non-Toxic Lash Serums

We vetted lash serums against the Welpr Standard and here are our top picks.

Camille May

Cofounder & Product Curator

Olushola M. Awoyemi

Medical Reviewer, PhD

Here's what we look for:

Simple formulas made with ingredients that meet our standard
Free from parabens, PEGs, phthalates, sulfates, BHA/BHT, formaldehyde and formaldehyde-releasing ingredients, and undisclosed fragrance
Mineral pigments or alternatives tested for heavy metals
EU-compliant brands and third-party certifications when available
Transparent sourcing, ingredients, and manufacturing practices

Best Non-Toxic Lash Serums

On Welpr, terms like "non-toxic," "safer," "cleaner," "healthier," and "vetted" are editorial labels based on our own standard for product assessment. They are not guarantees, certifications, or medical claims. Learn more.

Pretty Farm Girl Eyelash + Eyebrow Growth Serum

Meets the Welpr Standard

Top Pick

Pretty Farm Girl

Eyelash + Eyebrow Growth Serum

Free From: Cruelty Free
Highlights: For Lashes & brows

8.4

Performance score

Where to buy

Amazon
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Pretty Farm Girl
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An oil-based serum that comes in a glass tube with a built-in applicator, meant to be swept across lashes, brows, and the roots of your hair before bed each night. The formula works by conditioning the hair and improving circulation to the follicles rather than using peptides or prostaglandin analogs like many prescription-adjacent lash serums.
The base is carrier oils rather than water, so expect an oily feel on application. If you wear eye makeup to bed or dislike any residue near your eyes, that's worth knowing.
Most lash growth serums on the market rely on synthetic peptides or prostaglandin derivatives to stimulate growth. This one takes a purely botanical approach, using plant oils and herbal extracts to condition and nourish rather than chemically signal follicle activity. That makes it a different category of product with different expectations for results.
Among non-toxic lash serums, the ingredient list here is notably short (twelve ingredients, mostly organic plant oils and extracts) with no preservatives, which also means shelf life may be shorter than synthetic alternatives.
Handmade in small batches in Florida by a woman-owned family operation that sources some ingredients from their own farm and neighboring small farms.

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Live Fraiche All Natural Cold Pressed Castor Oil Eyelash Growth Serum

Meets the Welpr Standard

Budget Pick

Live Fraiche

All Natural Cold Pressed Castor Oil Eyelash Growth Serum

Highlights: Cruelty-free, Money-back guarantee, For Lashes & brows, Prostaglandin-free, Mascara wand applicator

8.1

Performance score

Where to buy

Amazon
See price

Video Review

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Pros

Noticeable lash and brow growth within a few weeks of consistent use, with several people sharing before-and-after photos.
Dual-brush design makes it easy to apply to both brows and lashes without switching tools.
Conditions lashes so they look plumper and healthier even before new growth kicks in.
Simple nighttime routine; most people just apply after removing makeup and find it no hassle.

Cons

Applies more product than needed; excess oil can seep into eyes and cause a dry, blinky feeling if you don't wipe it off.
Results are inconsistent; a few people saw little to no growth after two months of daily use.
The tube can leak or break after a few months of use.

A single-ingredient oil (cold pressed from castor beans sourced in India) packaged in a mascara-style tube with a dual-ended applicator: a fine eyeliner brush for the lash line and a spoolie for coating individual hairs. It's designed to make castor oil, which is naturally thick and messy, actually practical to use on lashes and brows.
Rather than using prostaglandin analogs (the active ingredient in most prescription-style lash serums that can cause side effects like skin darkening or fat loss around the eyes), this relies on the oil's fatty acids and nutrients to condition and strengthen hair at the follicle over time. Results are slower: expect 3 to 4 weeks before noticing changes, with fuller results around 6 to 8 weeks.
Meant to be applied nightly on a clean face as the last step before bed. The oil is thick and coats visibly, so morning cleansing washes off any residue. Among non-toxic lash serums, this is about as minimal as it gets: one ingredient, no preservatives, no actives.
Works for all skin types and hair textures, though anyone with a castor oil sensitivity should patch test first. Particularly relevant for people who want to avoid the synthetic ingredients common in growth serums but are okay with a slower, conditioning-based approach.
The founder started the brand after fielding constant questions about her own lashes and brows, which she maintained with a family remedy of cold pressed Indian castor oil. The first product was this serum, built around making that remedy easier to apply than pouring oil from a bottle.

Meets the Welpr Standard

Mirabella

Eyelash & Brow Growth Enhancing Serum

Free From: Cruelty Free
Highlights: Cruelty-free, For Lashes & brows

8.2

Performance score

Where to buy

Amazon
See price

Peptide-based serum that works on both lashes and brows. The formula uses multiple peptides to stimulate keratin production at the follicle level, which is the protein that actually makes up hair.
Applied with a single stroke along the lash line and brows, then left to dry for a minute or two. Meant to be used twice daily, morning and night, ideally after all other skincare (especially eye cream) so the serum stays where you put it.
Worth noting for anyone browsing non-toxic lash serums: this one skips prostaglandin analogs entirely. Many conventional lash growth serums rely on prostaglandin-like compounds (the same class as the active in Latisse), which can cause side effects like iris darkening and orbital fat loss. Mirabella's approach is peptide-only.
Mirabella is a professional cosmetics brand with over 20 years in the industry, originally built for salon and makeup artist use. The Amp 2.0 is a reformulation of their original serum with a higher peptide concentration.
The formula is water-based and lightweight. No fragrance or essential oils, so there's nothing scented going near your eyes.

Meets the Welpr Standard

Typology

Densifying Lash and Brow Serum L37 2% Pea Peptides + Castor Oil

Free From: Cruelty Free, Fragrance Free
Certified: Certified B Corp, PETA Certified, PETA Vegan
Highlights: Vegan, Made in EU, Fragrance-free, Recyclable packaging, For Lashes & brows, Brush tip applicator

8.2

Performance score

Where to buy

Typology
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A dual-purpose serum for both lashes and brows, applied with a brush wand at nighttime on clean skin. It uses plant-derived peptides to fortify hair at the follicle and reduce breakage and fallout rather than relying on prostaglandin analogs, which is the mechanism behind many prescription and over-the-counter lash serums.
Untinted and fragrance-free, so it layers invisibly under other products and won't interfere with a morning makeup routine.
Suitable for all skin types, including sensitive skin. The brand also notes it is not contraindicated during pregnancy or breastfeeding.
Typology is a French B-Corp certified brand that numbers each formula and publishes full ingredient lists with Yuka scores. Among non-toxic lash serums, that level of compositional transparency is relatively uncommon.
The formula has 19 ingredients total. Many competing lash serums use 30 or more, often including synthetic fragrances and colorants.

Meets the Welpr Standard

Stone & Spear

Natural Eyelash Enhancing Serum

Free From: Dye Free, Formaldehyde Free, Gluten Free, Paraben Free, Phthalate Free, Sulfate Free
Highlights: Longer-looking lashes, Strengthens lashes, Reduces lash breakage, Thicker-looking lashes, 100% natural formula, Made in USA, Money-back guarantee, Safe for brows

8.2

Performance score

Where to buy

Stone & Spear
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A lightweight, eye-area-friendly oil blend conditions lashes from root to tip, supporting the look of fuller, longer, naturally darker-looking lashes.
Jojoba oil mimics the skin’s natural sebum for absorption at the lash follicle, where it helps support healthy growth and reduce dryness along the lash line.
Castor oil conditions and strengthens for thicker-looking lashes, while rosehip oil supports flexibility to help reduce breakage.
Emu oil is included to enhance nutrient delivery to follicles and help maintain a balanced, healthy-looking lash line environment.
The same serum is suitable for both lashes and brows, rather than being limited to the upper lash line.

Meets the Welpr Standard

Maya Chia

Power Fol Eyelash & Eyebrow Treatment

Highlights: Vegan, Cruelty-free, Made in USA, Fragrance-free, Money-back guarantee, For Lashes & brows, Prostaglandin-free, Fine tip applicator

7.9

Performance score

Where to buy

Credo Beauty
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Uses a proprietary blend of four peptides to target lash and brow thickness, density, and overall health over time. It also doubles as an immediate lash primer and brow gel, so it's functional from day one.
The tube comes with two applicator ends: a fine tip for drawing product along the lash line at the root, and a brush end for coating individual brow and lash hairs.
Sized at roughly double the volume of most lash and brow serums on the market, which matters at this price point.
Formulated for people dealing with thinning lashes or brows, loss of volume, or sensitivity. Among non-toxic lash serums, the zero-irritation report from its consumer study is notable for anyone with reactive eyes.
Made in-house at Maya Chia's solar-powered studio in Charleston, South Carolina, where the founder formulates every product herself.

Aloe Barbadensis Leaf (Aloe) Juice
Water (Aqua)
Glycerin
Pisum Sativum (Pea) Peptide
Butylene Glycol
Propanediol
Leuconostoc/Radish Root Ferment Filtrate
Cocos Nucifera (Coconut) Fruit Extract
Scutellaria Baicalensis (Baikal Skullcap) Root Extract
Trifolium Pratense (Clover) Flower Extract
Tilia Tomentosa Bud Extract
Acetyl Tetrapeptide-3
Arginine
Saccharomyces/Zinc Ferment
Panax Ginseng Root Extract
Cellulose
Salvia Hispanica (Chia) Seed Extract
Myristoyl Pentapeptide-17
Panthenol
Biotinoyl Tripeptide-1
Triticum Vulgare (Wheat Sprouts) Germ Extract
Acacia Senegal Gum
Xanthan Gum
Ricinus Communis (Castor) Seed Oil
Hydrogenated Castor Oil
Copernicia Cerifera (Carnauba) Wax
Glycine Soya (Soybean) Germ Extract
Sodium Phytate
Calcium Gluconate
Dextran
Potassium Sorbate

Meets the Welpr Standard

Elina Organics

Natural Lash Growth Serum

Free From: Cruelty Free
Certified: Leaping Bunny
Highlights: Cruelty-free, Made in USA, Recyclable packaging, For Lashes & brows

7.9

Performance score

Where to buy

Amazon
See price

Pros

The fine-tip brush applicator makes it easy to place product precisely along the lash line without waste.
Formula is lightweight, non-greasy, and absorbs quickly with no noticeable scent.
No irritation reported, even around sensitive eye areas.
A few people noticed early signs of new growth within a couple of weeks, particularly on sparse brow patches.

Cons

The tube is very small, and most people felt the amount of product was surprisingly low for the price.
Not enough product to use on both lashes and brows without running out quickly.
Results on lash length were inconsistent; a few people saw no noticeable improvement after weeks of regular use.

Water-based liquid serum that works on both lashes and brows. The key peptide targets keratin production at the follicle level, which is the protein that actually makes up hair, aiming to extend the growth cycle rather than just conditioning what's already there.
Oil-free formula, so it won't interfere with eye makeup or leave a greasy residue along the lash line. Applied directly to the lash line and brows twice daily.
Among non-toxic lash serums, most rely on longer ingredient lists with oils and synthetic stabilizers. This one uses a notably short formula built around botanical extracts and a single peptide.
Elina Organics is a small-batch operation run out of a Michigan lab, where the founder (a licensed esthetician and cosmetic chemist) personally formulates the products. Nothing is mass-manufactured or outsourced to a contract facility.
The brand adjusts its formulas seasonally to prevent skin from acclimating, so the exact composition may shift slightly between batches while keeping the same active ingredients.

Meets the Welpr Standard

Sweed Beauty

Eyelash Growth Serum

Highlights: Vegan, Cruelty-free, EU safety standards, For Lashes & brows, Prostaglandin-free

7.1

Performance score

Where to buy

Amazon
See price
Sweed Beauty
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Most lash serums rely on prostaglandin analogues (synthetic hormones) to stimulate growth. This one uses peptides and vitamins to extend the lash growth phase instead, which avoids the pigmentation and irritation issues associated with prostaglandins.
Applied once nightly along the upper lash line only, like a thin eyeliner stroke. Results typically show up around the 4-6 week mark, after which you can drop to 2-3 times a week for maintenance.
Worth knowing if you've had sensitivity to other non-toxic lash serums: the concentrated formula can still cause redness or irritation in some people. Sweed recommends starting every other day for the first week to test tolerance.
Also works on brows if you have sparse areas, though Sweed makes a separate brow-specific product with a different applicator shaped for that purpose.
Sweed started as a false lash brand founded by a Swedish makeup artist. The serum line came out of that lash-focused background.

Meets the Welpr Standard

Vegamour

GRO Lash Serum

Free From: Cruelty Free
Highlights: Vegan, Cruelty-free, For Lashes only, Prostaglandin-free

7.0

Performance score

Where to buy

Amazon
See price

Pros

Several people noticed visible improvements in lash length and fullness, though results took anywhere from two weeks to six months.
Applies easily and doesn't burn or sting the eyes.

Cons

Results are inconsistent; multiple people used it for six or more weeks and saw no change at all.
One person with naturally long lashes experienced noticeable lash breakage after about a month of use (the most-upvoted review at 52 helpful votes).
Progress is slow, with some people not seeing any growth until several months in.

Uses plant-based phytoactives and peptides to support lash fullness at the root, rather than relying on prostaglandins or other hormone-based actives that are common in conventional lash serums.
Applied with a thin wand directly to the upper and lower lash lines. The formula is lightweight and clear, so it layers under makeup without interference.
Vegamour describes it as safe for sensitive eyes, which matters in the non-toxic lash serums category since many alternatives cause irritation or discoloration around the eye area.
Expect a slow build: visible changes typically start around 4 to 8 weeks, not overnight. The brand recommends twice-daily use for the first two months, then once daily after that.
Each tube is meant to be replaced every two months, so the ongoing cost is built into the product's design rather than being a one-time purchase.

Meets the Welpr Standard

Kosas

Grow Potion Fluffy Lash + Brow Boosting Serum

Free From: Cruelty Free
Certified: Leaping Bunny
Highlights: Vegan, Cruelty-free, Hypoallergenic, Fragrance-free, Recycled materials, For Lashes & brows, Prostaglandin-free

7.0

Performance score

Where to buy

Amazon
See price
Credo Beauty
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Pros

Multiple people saw noticeable fullness and thickness in eyebrows after consistent use.
The applicator is a soft, angled sponge tip that makes application easy, especially on brows.
Does not cause the eyelid darkening that some competing serums do.

Cons

Results are inconsistent; several people finished the tube and saw no difference, particularly on lashes.
Can leave white, flaky residue on brows by morning.
Lash results lag behind brow results; a few people noticed brow improvement but little change in lashes.

A 2-in-1 serum that works on both brows and lashes, so you're not buying (or applying) two separate products. It uses peptides and vegan keratin to support the appearance of fuller, thicker growth over time.
Designed with sensitive eyes in mind: ophthalmologist tested, hypoallergenic, and prostaglandin-free. Many non-toxic lash serums still use prostaglandins, which can cause darkening of the eyelid or changes in eye color.
The applicator has two sides: a flat edge for sweeping across brows and a pointed tip for tracing along the upper lash line. You only need one dip of serum per area.
Fragrance-free with a lightweight, clear formula. It's meant to go on at night after skincare, and it dries down in a minute or two.
Compatible with lash extensions since the formula contains no oils or solvents that would break down adhesive. Also tested safe for contact lens wearers.
Brow results tend to show up before lash results because brow hairs have a shorter growth cycle. Kosas sets the expectation at around 12 weeks for measurable change.

Water (Aqua)
Pullulan
Propanediol
Glycerin
Butylene Glycol
Sorbitol
Pentylene Glycol
Xanthan Gum
Sodium Hyaluronate
Panthenol
Soy Amino Acids
Wheat Amino Acids
Arginine Hcl
Serine
Threonine
Trehalose
Acetyl Tetrapeptide-3
Biotinoyl Tripeptide-1
Myristoyl Pentapeptide-17
Trifolium Pratense (Clover) Flower Extract
Citric Acid
Dextran
Sodium Gluconate
Acacia Senegal Gum
Phenethyl Alcohol
Potassium Sorbate
Ethylhexylglycerin
Benzyl Alcohol
Benzoic Acid

How to Swap to Non-Toxic lash serums:

Here's how to swap to non-toxic lash serums:

What to know about lash serum

Lash serums are applied daily to one of the most sensitive areas of your body — right along the lash line, near your eyes. Because of this high proximity and frequent use, the ingredients in your serum matter more than in many other products.

Some lash serums rely on synthetic fragrances, harsh preservatives, or hormone-disrupting ingredients like parabens and phthalates to extend shelf life or add scent.
Welpr looks for clean formulations with purposeful ingredients, safe preservatives, and no unnecessary additives — especially important for a product used so close to your eyes every day.

Review the lash serum you already use

Check whether your current lash serum meets Welpr's standards by scanning its ingredient label. Open the Welpr Personal Care and Cosmetic Scanner, take a photo of the ingredient list, and it will flag any concerning ingredients.

Look out for "fragrance" or "parfum" on the label — these often indicate undisclosed synthetic ingredients.
Since lash serum is used daily near the eyes, prioritize checking it before products you use less often or further from sensitive areas.

Use your current lash serum more carefully

If you're not ready to switch yet, small adjustments in how you apply your serum can reduce unnecessary exposure. A little care with application goes a long way near the eye area.

Apply only to the lash line as directed — avoid getting serum directly on your eyelid or in your eye, and use the smallest amount needed.
If you notice any redness, irritation, or swelling, take a break from the product and consider replacing it sooner.

Choose a cleaner lash serum

Look for lash serums with simple, purposeful ingredient lists. The best options skip synthetic fragrance, harsh preservatives, and unnecessary additives while still being effective.

Choose serums that are fragrance-free or scented only with natural plant extracts, and look for certifications like EWG VERIFIED™ or MADE SAFE® for extra confidence.
Click the button above to shop Welpr Approved lash serum.

Camille May

Cofounder & Product Curator

Camille May is the co-creator of Welpr and a guide for clean living. After selling her last company in the health food space, she went non-toxic while working to heal an autoimmune condition....

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Olushola M. Awoyemi

Medical Reviewer, PhD

Olushola M. Awoyemi (aka Shola) is a board-certified toxicologist and a research scientist with a PhD in Environmental Toxicology. Shola's long-term ambition is to be recognized as a world-renowned expert in toxicology,...

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