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2022's Top Lash Serums for Long, Thick, Voluminous Lashes

We reveal the top 5 solutions to boost your lashes—plus what to look for & avoid when purchasing a lash serum.

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Many people are willing to go to extreme lengths to have longer-looking lashes. But the days of applying cumbersome fake lashes, extensions, or heavy amounts of mascara are shifting as lash serums have exploded into the mainstream beauty market.

A quality lash serum can deliver fantastic results turning lackluster lashes into noticeably longer, fuller lashes. That's why we put together this guide to help you sort through the clutter and find a lash product that delivers on its promises.

A Quality Lash Serum:

  • Promotes longer & healthier lashes
  • Increases lash density for a fuller look
  • Is easier to apply from the comfort of your own home

But, there are a lot of lash serums available on the market, and many can be inherently costly, require a prescription, or even be risky to use due to certain ingredients that may cause harsh side effects. So when shopping for a lash serum, it’s important to know which ingredients to look for and which to avoid.

Top 5 Ingredients To Look For In Lash Serum

Red Clover Extract (Capixyl)

A clinically studied, vitamin-rich botanical containing lash-boosting peptides that support the structure of the follicles to promote fuller, healthier lashes.

Keratin

A protein that enhances the health of hair follicles and plays an important role in hair growth and thickness. It also helps prevent your lashes from weakening due to internal (hormonal) or external (toxins) stressors.

Biotin

A lash-nourishing vitamin that keeps follicles strong and works in conjunction with other nutrients to promote growth and reduce inflammation in the roots.

Silk Amino Acids

Silk amino acids are the result of jelly-like proteins that help lock moisture into the lash.

Vitamin B5 (Panthenol)

Vitamin B5 is a powerful lash-growth ingredient that helps moisturize lashes and boosts thickness.

Finding a lash serum with the ingredients listed above is just the first step. There are some other important factors to consider before actually purchasing a quality lash product.

What To Avoid:

Prostaglandins

Most well-known brand name prescription & OTC serums contain prostaglandin analogs, which are synthetic chemical compounds with hormone-like effects. They've been known to cause adverse side effects like rashes, blurry vision, and drooping around the eyelids. Many labels might not openly disclose this information, so be sure to do your research.

Castor Oil

This popular vegetable oil is said to help lashes grow fuller and longer. But the evidence is mostly anecdotal. Because castor oil is viscous and reflects light, it simply gives the illusion of longer, fuller lashes without having any real effect on growth. Plus, many castor oil serums contain additives and are not specifically formulated and tested for the eye area—which can cause irritation, redness, or worse if you accidentally get some in your eye.

Eyelash Extensions & False Eyelashes

While tempting, fake eyelashes often require glue and can cause breakage of your real eyelashes upon removal. More often than not, they're made of cheap plastic which could also cause irritation or an allergic reaction. And, while extensions or falsies are often a go-to solution for a special occasion, continued upkeep can be expensive and cause our lashes more harm than good.

Parabens

Chemicals including methylparaben, ethylparaben, and propylparaben can be absorbed through your skin and have been linked to serious long-term health conditions.

What Else to Consider When Buying a Lash Serum

Transparent List of Ingredients

Many lash serums only list a handful of their key ingredients. Make sure the lash serum you choose has a transparent list of ingredients so you know exactly what you're getting with no surprises.

Money-Back Guarantee

The beauty industry makes billions of dollars per year, which makes it easy for manufacturers with poor products to slip through the cracks. So make sure to buy a lash serum from a brand that’s willing to stand by its product with a 100% money-back guarantee.

Top 6 Lash Serums Of 2022

When putting together our rankings, we consider the quality of ingredients, safety, return policies, projected effectiveness, and customer satisfaction.

1. Lash24TM AM/PM Formula

Total Ranking

9.7/10

A+

Overall Grade

PROS

  • AM Primer + PM Lash Serum
  • 8ml of product per tube
  • 2-month supply
  • Naturally derived ingredients
  • Silk amino acids
  • Hydrating fruit sugars
  • Keratin, biotin, & panthenol
  • Red clover extract
  • Prostaglandin-free
  • Paraben-free
  • 90-day return policy

CONS

  • Exclusively sold in the US and Canada
  • Only available online
The Bottom Line

Hair La Vie's Lash24 uses clinically studied, naturally derived ingredients, like biotin, keratin, green tea, and red clover extract —  each with distinct, lash-enhancing benefits. Its formula also includes silk amino acids and hydrating fruit sugars to help lock in moisture.

To top it all off, Lash24 is the first product of its kind to have dual purpose AM primer + PM serum formulas. Each tube contains 8ml of product, which should last around 2 months—this is almost 3x more than the other brands on our list. 

Users of Lash24 reported longer, fuller lashes within as little as 4 weeks. Hair La Vie also offers a 100% satisfaction, 90-day money-back guarantee, which shows us that they stand by their product.

*Results are based on the Smarter Reviews Ranking System and do not necessarily reflect typical results from the use of these products. Please visit product websites for more information.

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2. Lunar Lash 

Total Ranking

9.1/10

A-

Overall Grade

PROS

  • Naturally derived ingredients
  • Red clover extract
  • Keratin
  • Biotin
  • Silk Amino Acids
  • Vitamin B5 (Panthenol)
  • Prostaglandin-free
  • Paraben-free
  • 60-day return policy

CONS

  • 3ml of product per tube
  • Can only be used at night
The Bottom Line

Lunar Lash by Tru Alchemy ranks #2 on our list of top five lash serums. This PM lash serum delivers potent conditioners to both help maintain hydration and support a longer, fuller look.


Lunar Lash is formulated with clean, clinically studied ingredients like red clover extract, keratin, biotin, silk amino acids, and vitamin B5, as well as other powerful ingredients that work together to visibly improve lash length and volume while also helping to nourish the skin along the lash line.


Tru Alchemy’s risk-free return policy includes a 60-day, no-questions-asked guarantee. It may not be needed, however, as the effectiveness of the product earned a top score.*

*Results are based on the Smarter Reviews Ranking System and do not necessarily reflect typical results from the use of these products. Please visit product websites for more information.

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3. Gro+ Advanced Lash Serum 

Total Ranking

8.7/10

B+

Overall Grade

PROS

  • Naturally derived ingredients
  • Red clover extract
  • Mung bean extract
  • Prostaglandin-free
  • Paraben-free
  • 90-day return policy

CONS

  • 3ml of product per tube
  • Can only be used at night
  • Lacks keratin and biotin
  • Lacks amino acid complex
The Bottom Line

There's a lot to like about GRO+ Advanced Lash Serum by Vegamour. Like most contenders on our list, this serum is made with naturally derived ingredients, and is 100% vegan and cruelty-free

In addition to red clover extract, Vegamour's formula also includes clinically studied mung bean and hemp-derived cannabidiol, which has been shown to help reduce inflammation and help improve blood circulation.

Unfortunately, it lacks essential nutrients like keratin, biotin, and an amino acid complex. Their tube only contains 3ml of product and can only be used at night.

On the plus side, people who used this product left highly favorable reviews, and many people found it to be an effective lash serum. Additionally, Vegamour offers a solid 90-day money-back guarantee

*Results are based on the Smarter Reviews Ranking System and do not necessarily reflect typical results from the use of these products. Please visit product websites for more information.

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4. GrandeLASH-MD


Total Ranking

8.1/10

B-

Overall Grade

PROS

  • Panthenol
  • Amino acid complex
  • Hydrating fruit sugars
  • Paraben-free
  • 90-day return policy

CONS

  • 4ml of product
  • Can only be used at night
  • Lacks keratin and biotin
  • Lacks red clover extract
  • Contains synthetic prostaglandin
The Bottom Line

GrandeLASH-MD's award-winning lash serum is infused with a potent blend of ingredients to help promote the appearance of naturally longer, thicker-looking lashes. Its formula includes panthenol, amino acids, and hydrating fruit sugars

However, it's also missing a lot of key ingredients: biotin, keratin, and red clover extract. And unfortunately, GrandeLASH-MD's formula contains a prostaglandin analog, which may be responsible for some users reporting discoloration around their eyes after use. 

Their formula comes in 2 different sizes, the larger containing 4ml of product, which still falls short of our top pick. Plus, it's only a night time serum. Grande Cosmetics offers a 90-day return policy if you're not 100% satisfied with their product. 

*Results are based on the Smarter Reviews Ranking System and do not necessarily reflect typical results from the use of these products. Please visit product websites for more information.

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5. Lash Boost


Total Ranking

7.5/10

C

Overall Grade


PROS

  • Keratin and biotin
  • Panthenol
  • Hydrating fruit sugars
  • 5ml of product
  • Paraben-free 

CONS

  • Can only be used at night
  • Lacks several key ingredients
  • Contains synthetic prostaglandin 
  • High price point
The Bottom Line

Rounding out our list is Rodan + Fields Lash Boost. Their formula includes favorites like panthenol, keratin and biotin, however it's missing a lot of other important ingredients like red clover extract, silk amino acids, and hydrating fruit sugars. 

More importantly, Rodan + Fields recently came under fire for "deceptive labeling" and a lawsuit was filed on behalf of consumers, alleging a "failure to disclose the harmful side effects" of a synthetic prostaglandin found in their formula. 

Additionally, Rodan + Fields Lash Boost costs 2-3 times as much as the average eyelash serum. On the upside, it does contain 5ml of product per tube, and if you're not satisfied with this product, Rodan + Fields offers a 60-day money-back guarantee

*Results are based on the Smarter Reviews Ranking System and do not necessarily reflect typical results from the use of these products. Please visit product websites for more information.

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CITATIONS

  1. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3036812/
  2. Karaca and Akpolat, J Cosmo Trichol 2019, 5:1 DOI: 10.4172/2471-9323.1000140
  3. https://pubmed.ncbi.nlm.nih.gov/23449130/
  4. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3509882/
  5. https://pubmed.ncbi.nlm.nih.gov/28879195/
  6. https://www.researchgate.net/figure/Hyaluronic-acid-filling-in-the-left-temple-region-results-in-the-skin-necrotic-and_fig6_328647283
  7. https://www.agelyss.com/downloads/widelash.pdf
  8. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6147748/
  9. https://www.yourhormones.info/hormones/prostaglandins/
  10. https://krcomplexlit.com/currentcases/rodan-fields-lash-boost-litigation