9 best eyelash growth serums 2026, tried and tested
The best eyelash growth serums are one of those beauty categories I didn’t fully buy into until I tried one myself. I used to have pretty good lashes, but after years of lash extensions, lash lifts and, yes, a very committed clumpy mascara phase, my natural ones were left looking noticeably shorter, weaker and, to put it politely, a little battered.
Before my wedding, “how to grow your lashes” was one of my most Googled phrases. I’d already seen how well a hair growth serum was working for me, so when eyelash growth serums kept coming up, I was all in. I’d tested lash serums in the past, but I’d never really committed to using one properly long-term - and that, I’ve learned, is the whole point. Patience really is key. After about three months of using UKLASH’s Sensitive Lash Growth Serum, I started noticing a real change. My lashes looked thicker, healthier and noticeably longer. Fast-forward to now, and I regularly get asked if I’m wearing extensions.
- Meet the experts
- How I tested eyelash growth serums:
- Why you can trust me:
- What is the best eyelash serum that actually works?
- Do eyelash serums really work?
- How do lash growth serums work?
- How long do lash growth serums take to work?
- Do eyelash serums have any side effects?
- What happens if you stop using an eyelash growth serum?
According to Claire Larsen, global master educator at RevitaLash Cosmetics, “Eyelash serums are similar to a hair conditioner: they hydrate the hair with conditioning ingredients for shine and flexibility, to prevent brittleness and breakage, and they strengthen the hair with ingredients rich in vitamins and strengthening peptides.” Honestly, that made a lot of sense to me, especially once I started seeing the difference for myself. So whether you’re still in research mode or ready to try an eyelash serum for yourself, here’s everything you need to know, including the Glamour team’s tried-and-tested favourites with real-life results.
How I tested eyelash growth serums:
For this piece, I knew I couldn’t test every lash serum on my own lashes – if I did, the results would completely blur into each other. So after doing my research and speaking to lash experts and dermatologists, I called in nine of the most-talked-about lash serums for the wider Glamour team to trial over three months. That meant we could test them properly across different skin tones, skin types and lash types, and get a much clearer picture of what actually worked.
As well as tracking visible results, we also paid close attention to how each formula felt to use day to day. Did it cause any sensitivity? Any stinging, redness or irritation around the eyes? Did it actually make lashes look better with consistent use? Bringing in the wider team meant we could properly assess which formulas delivered, which ones felt comfortable to wear and which were worth the patience they require.You can read all about how we test at Glamour here.
Why you can trust me:
I've been a beauty journalist for six years now – five at The Mirror and the past year at Glamour – and finding the very best products that actually work has always been my aim. I used to have thick, long lashes - that was before I pretty much ruined them with heavy eyelash extensions (yep I went through the Russian lash phase IYKYK).
Before my wedding, I was determined to grow my hair and my lashes in time for my big day – so gave myself around 6-7 months to fully commit to an eyelash serum. After plenty of research – and making sure I picked one that was prostaglandin-free – I landed on UKLASH's Sensitive Lash Growth Serum, and am still using it to this day.
One thing about lash serums is you need to be consistent for them to actually work – they won't magically change your lashes overnight, but after around three to four months you should start noticing changes in thickness, health and growth. When it comes to lash serums, ingredients I look out for include peptides to lengthen, biotin and panthenol (vitamin B5) for strengthening, and moisturising agents like hyaluronic acid or castor oil. Look for nutrient-rich botanicals for conditioning, while avoiding prostaglandin analogs if you have sensitive eyes. The products which contain prostaglandin have been noted in the ‘pros & cons’ section of the descriptions.
Ahead, the best eyelash growth serums for 2026, reviewed by the Glamour team.
- Key ingredients: Biotin Peptide, vitamin B5, Myristoyl Pentapeptide-17 and green tea extract.
- When to apply: For best results, apply in the evening and allow the serum to work overnight.
- Results after use: 85% of testers saw longer, fuller lashes.
Why we love it: Fortified by nutrient-rich ingredients that stimulate keratin growth such as grape seed extract, swertia japonica extract, pentapeptide-17 and vitamin B7, this viral eyelash serum is bound to deliver fuller and longer lashes quickly and effectively. It lengthens and strengthens your lashes at the same time and is even suitable for wearers of both false lashes and eyelash extensions. It's also reasonably affordable when it comes to lash serums, which is always a big plus in our book. One of the best lash conditioners around.
“The UKLash eyelash serum truly deserves all the hype it gets. It doesn't irritate my sensitive skin, and the redness is minimal. It only took me a couple of weeks of use to start noticing improvement, and by week 8, the results were undeniable,” shares Robyn Eugene, Glamour's Social Media Manager.
Save when you shop for the best eyelash growth serums with these Sephora discount codes at checkout.
Pros & ConsPros- Visible difference within a couple of weeks
- Lengthens and strengthens your lashes at the same time
Cons- Can cause some redness at first
- Contains prostaglandin
- Key ingredients: Pentapeptide complex combined with Ayurvedic plant stem cells and B-vitamins.
- When to apply: For best results, apply 1-2 times daily to clean, dry lashes. In the morning, apply before mascara and, at night, after.
- Results after use: Longer, fuller lashes 2-4 weeks after.
Why we love it: Chämpo (pronounced ‘shar-pour’) is the Sanskrit term for shampoo, describing the ancient Indian practice of ‘cleansing, soothing and massaging the head and hair’. As such, the brand is best-known for their shampoo and conditioner sets, including Vata (the hydrating collection) and Pita (best for volumising).
“I adore their haircare, so I knew I'd love their eyelash growth serum too. It's formulated with sparse and thin lashes in mind, clinically proven to reduce lash shedding while visibly enhancing length, thickness, and fullness. It uses peptides - not prostaglandins - which optimises serum absorption to help stimulate follicles and thicken lashes from the root – and it's also free from silicones, parabens, artificial colours, DEAs, MEAs, TEAs and GMOs. It's safe for use during pregnancy, and for contact lens wearers, and it's quick-drying (which is important, if I'm applying it just before bed). After two weeks, I started to notice a difference in the thickness of my lashes – and after four, friends started to compliment them. A true gem.
Pros & ConsPros- Longer, fuller lashes in 2-8 weeks
- Fragrance-free, non-greasy
- Prostaglandin-free
Cons- None to note
UKLASH Sensitive Eyelash Serum
Key ingredients: Peptides, hyaluronic acid, seven calming plant extracts
When to apply: Once a day on clean lashes – I prefer at night so it can work while I sleep
Results after use: Fuller, healthier-looking lashes with less irritation after a few weeksWhy we love it: If you’ve always wanted to try a lash serum but your eyes flare up at the first sign of one, this gentle take from UKLASH is worth a spot on your shelf. It teams strengthening peptides with hydrating hyaluronic acid to keep lashes soft and nourished, while soothing botanicals calm the delicate skin along your lash line. The slim brush makes it easy to swipe on without drips or mess, and there’s no burning or tingling - just a quick-drying serum that easily slots into your routine.
“No lash serum is going to give you dramatic lashes overnight - most of them take time, and this one is no exception. After about six weeks of nightly use, I could genuinely see a difference - not huge, but definitely noticeable. My lashes looked slightly thicker at the root, and longer - especially when I popped on my favourite mascara. The biggest win for me is how gentle the formula is - especially as I have sensitive skin. The fact I can apply this nightly, and wake up with zero redness in the morning is a total win.” - Shani Cohen, Glamour's Beauty Commerce Writer.
Pros & ConsPros- Designed specifically for sensitive eyes
- Calming plant extracts help reduce irritation
- Prostaglandin-free
Cons- Results are gradual
RevitaLash Advanced Eyelash Conditioner
- Key ingredients: BioPeptin Complex, ginseng and Swertia Japonica extracts, saw palmetto, amino acids and vitamin B.
- When to apply: Once a day, but allow to dry completely (2-3 minutes) before applying eye makeup or going to sleep.
- Results after use: 98% of testers reported stronger, healthier-looking lashes.
Why we love it: A gentle yet mighty formula that's developed by physicians and is clinically approved by both ophthalmologists and dermatologists. It contains a biopeptin complex packed with biotin, green tea, peptides and lipids, which work together to help strengthen lashes and stimulate healthy hair growth. Plus, this bestselling lash growth serum is also packed with plenty of natural ingredients, including plant and flower extracts, as well as vitamins and antioxidants. And did we mention it's also hypoallergenic, oil-free, vegan, cruelty-free and suitable for sensitive skin? One swipe along the lash line each evening is all it takes to achieve the lashes of your dreams in a matter of weeks.
“I started to see the difference after 3-4 weeks of use, so much so that everyone around the office started asking whether I was wearing eyelash extensions. I didn't notice any irritation whatsoever, and the results speak for themselves,” says Sophie Cockett, Glamour's Senior European Commerce Editor.
Pros & ConsPros- Easy to apply
- Lashes look longer and thicker
Cons- Expensive
- Contains prostaglandin
UKLASH Complex Peptide Lash Growth Serum
Key ingredients: Peptides, hyaluronic acid, vitamin B5.
When to apply: Once daily on clean lashes.
Results after use: Fuller, longer-looking lashes in as little as 8 weeks.Why we love it: This cult-favourite lash serum blends strengthening peptides with hydrating hyaluronic acid and conditioning vitamin B5 to support healthy lash growth from root to tip. The lightweight formula coats each lash evenly, helping to prevent breakage and brittleness while creating the ideal environment for thicker, denser lashes. It’s also prostaglandin-free (the ingredient that can sometimes irritate eyes), making it a gentle yet effective choice for everyday use.
“I have tried more lash serums than I’d like to admit, but UKLash’s Complex Peptide Serum genuinely stood out. I loved how easy it was to swipe on with the fine brush and how quickly it absorbed without any sticky residue. After around six weeks of nightly use, my lashes looked noticeably longer, darker and more defined - even without mascara.The only downside? You really do need to be consistent to get the best results, but if you’re patient, it’s a total game-changer for your lash routine.” - Shani Cohen, Glamour's Beauty Commerce Writer.
Pros & ConsPros- Peptide-rich formula to strengthen lashes
- Hydrates and conditions with hyaluronic acid and vitamin B5
- Prostaglandin-free
Cons- Requires daily use and a little patience before results sho
- Key ingredients: Glycerin, glycol, green tea leaf extract, clover flower extract, biotin and Wasabia Japonica root ferment extract.
- When to apply: Use every evening on clean, dry lashes.
- Results after use: Longer, more volumised lashes.
Why we love it: This viral eyelash conditioner has been all over #BeautyTok for quite some time now, and for a good reason. Sold exclusively at Beauty Bay, the Glow For It Lash Growth Serum is formulated to lengthen, thicken and strengthen your natural lashes. You can give thanks to its highly effective formulation that's filled to the brim with ingredients such as multi-peptides to stimulate hair growth, biotin to strengthen, panthenol to reduce breakage, and chamomile extract to soothe and reduce inflammation. It also features an ingredient called saw palmetto extract, which helps to lessen sparsity and helps with thicker growth. It's been proven to work in just under 2 weeks, too.
When testing the Glow For It eyelash serum, our Senior Beauty Editor, Elle Turner noted that it didn't result in any discomfort or irritation whatsoever. She noticed results as early as 11 days into the testing process, which is the fastest compared to other serums we've tried.
Pros & ConsPros- Easy to apply
- Fragrance-free
- Prostaglandin-free
Cons- Some reviewers noticed redness at the start - so it's best to do a patch test
The Ordinary Multi-Peptide Lash and Brow Serum
- Key ingredients: Myristoyl Pentapeptide-17, Biotinoyl Tripeptide-1, Oligopeptide-2, Acetyl Tetrapeptide-3 and caffeine.
- When to apply: Apply a thin layer along the lash line and eyebrows in the morning and evening.
- Results after use: Thicker-looking lashes and brows.
Why we love it: When it comes to affordable yet reliable beauty products, not many do it better than The Ordinary. This water-based eyelash and eyebrow serum is suitable for all skin types and has a lightweight, non-greasy formula that nurtures both the hair and skin. It comes with 11 (yep, 11) different active ingredients, including arginine, four peptide complexes, and a whole set of natural extracts to give your lashes and brows the boost they deserve. Not only that, but it's also brimming with the brand's Sympeptide Xlash technology to nourish, and Widelash technology to promote length and volume.
As I was testing a different lash serum at the time, I didn't test this one long enough to show results on myself, however Fiona Embleton, Glamour's Associate Beauty Director did, and loved it. She said: "I've been trialling this formula for over 6 weeks now, and I'm already seeing some promising results, having noticed a sizeable improvement to the length of my lashes as well as volume.”
Save money on this eyelash serum with these LookFantastic discount codes.
Pros & ConsPros- Lightweight, non-greasy formula
- 11 different active ingredients
- Prostaglandin-free
Cons- Some reviewers say brush bristles are quite stiff
Grande Cosmetics GrandeLASH-MD Lash Enhancing Serum
- Key ingredients: L-Proline, hyaluronic acid, vitamin E, panthenol, glycerin and aloe barbadensis leaf juice.
- When to apply: Use once a day and allow 1-2 minutes for it to dry.
- Results after use: 94% of testers saw healthier-looking lashes, and 91% saw longer-looking lashes.
Why we love it: Looking to achieve naturally longer and thicker lashes? Say no more. Powered by a blend of amino acids, prostaglandin, peptides and hyaluronic acid, this moisturising eyelash serum will give you what you want and then some. Its ultra-slim, soft applicator makes it easy to target shorter, more fragile lashes, and it's also suitable for people who wear contact lenses and lash extensions. Although it's certainly an investment, the good news is that it's frequently on sale on Amazon for a fraction of the price. Plus, the chic golden tube and the fact it promises visible results in just 4-6 weeks has us sold.
“I've used the GrandeLASH-MD Lash Enhancing Serum for just under 4 weeks, and judging by the impressive results, this might just be one of the most effective eyelash growth serums I've tried. Not to mention, I've started noticing the results after just 2 full weeks of use, which definitely scores extra points in my book," says Sophie Cockett, Glamour's Senior European Commerce Editor.
Pros & ConsPros- Visible results in just 4-6 weeks
- Slim brush makes it easy to target shorter, more fragile lashes
Cons- Contains prostaglandin
- Expensive
Key ingredients: Pea Peptide, hyaluronic acid, green tea and cica extracts.
When to apply: Once a day to clean, dry upper lash line.
Results timeline: Use everyday for a minimum of 6 weeks for the best results.Why we love it: A newbie on the market - this lash serum is all about strengthening from the root up rather than giving a quick-fix effect. Peptides help support healthier, denser lashes over time, while hyaluronic acid and soothing botanicals keep them hydrated and less prone to breakage. The texture is lightweight and non-sticky, so it sits comfortably under your usual skincare without any irritation.
The results are slow and steady, but that’s the appeal. With consistent use, lashes can look more even, less brittle and subtly fuller. It’s a great option for anyone who wants a gentle, prostaglandin-free formula that prioritises lash health.
Pros & ConsPros- Peptide blend to support stronger lashes
- Gentle, vegan, prostaglandin-free formula
Cons- Requires patience and daily use to see results
FAQs
What is the best eyelash serum that actually works?
Total honesty: it's a toss-up between the two. RevitaLash is a brand behind one of the most popular eyelash enhancers on the market – the RevitaLash Advanced Eyelash Serum – largely due to its ability to target hair growth whilst defending against environmental damage. It has an antioxidant-packed green tea and the BioPeptin complex, and has genuinely delivered on results when tested by multiple members of the Glamour team.
Our former Senior Visual Editor, Chelsea Hughes, gave the product a particularly glowing review after testing it over the course of six weeks.
“To sum this product up; I’ve had numerous friends and family physically inspect my lashes to check whether or not I’m lying about them being real," she said. "The improvement is phe-nom-en-al!”
Our runner-up? The UKLASH Lash Growth Serum. It's a vegan, cruelty-free formula (not all lash serums are), which is formulated to give healthier, thicker, fuller, longer lashes. It's enriched with an amino acid peptide known for stimulating keratin growth, as well as vitamin B5 for hydration and green tea extract to keep the skin around your eyes calm. It’s also free from parabens and oils; making it safe to use with lash extensions and contact lenses.
Do eyelash serums really work?
In a nutshell: yes, they help support each hair follicle's growth cycle by conditioning your lashes (similar how nourishing haircare products would encourage healthy regrowth). "Eyelash serums help to grow your natural lashes, making them longer and thicker after continued usage – it is a commitment, but worth it for beautiful, natural lashes," explains Nima Pourian, founder of Uklash.
How do lash growth serums work?
“Eyelash serums absorb into the lash and brow follicles to help stimulate growth, reducing fall out and enhancing the thickness of hair by strengthening roots,” shares Nima.
“They protect the health of the hair with free-radical fighting antioxidants and they enhance the overall beauty of the lashes for healthier lashes,” shares Claire Larsen, global master educator at RevitaLash Cosmetics. "A comprehensive formula will contain a blend of ingredients like conditioners, vitamins, antioxidants and peptides to have a multi-faceted approach to beautifying the lashes and keeping them strong and healthier-looking," she explains.
How long do lash growth serums take to work?
According to Claire, results usually differ depending on the individual, however, the growth is often noticeable after six weeks of regular, daily use. "We conducted an independent consumer study with 63 participants. After six weeks of daily directed use, 98% reported improved lash appearance, 98% reported healthier-looking lashes, and 98% reported stronger lashes."
Meanwhile, Nima shared that the growth also depends on the stage of “your lash growth cycle.” "Our eyelashes and brows go through a cycle of around three months (12 weeks). This includes a growth phase (Anagen), a transition phase (Catagen) and a resting phase (Telogen)," Nima elaborates. “This is why Eyelash & Eyebrow growth serums are advised to be used once per day for 8-12 weeks to achieve best results - the same amount of time as a full growth cycle.”
Do eyelash serums have any side effects?
"Aside from the positive benefits, some users can experience redness or irritation, particularly if they are excessively using," says Larsen.
Similar to many other beauty products with active ingredients, it's always better to tread carefully and do a patch test to observe how your skin reacts to your chosen eyelash serum. “It is very rare that someone would have a reaction, but the eyes can be sensitive so always best to check first," says Pourian. “It is also important to follow instructions correctly and not to overuse the serum.”
You could also look for dedicated options for sensitive eyes, like the Revitalash Advanced Sensitive Eyelash Conditioner, and keep a beady eye for ‘ophthalmologist-developed/tested’.
What happens if you stop using an eyelash growth serum?
According to experts, you shouldn't stop or use your eyelash growth serum on and off, particularly if you're noticing results.
“You may gradually lose the benefits gained during its use. Typically, lashes return to their natural growth cycle, which can decrease their length and volume,” says Lauren Hogsden, makeup artist and brow expert at Benefit.
So, while your lashes may not go back to the same brittle and weak state as before, they might become less prominent – so if you're looking to maintain your results, keep using your eyelash serum. Our top tip? Pop it on your vanity next to your evening skincare, or next to your toothbrush, so you can't not see it.
Meet the experts:
- Claire Larsen, global master educator at RevitaLash Cosmetics.
- Nima Pourian, founder of UKLASH.
- Lauren Hogsden, brow expert and senior makeup artist at Benefit.
