These Lash Growth Serums (Tested by Us) Are a Magnet for "Are They Real?" Comments (2024)

TL;DR

Our top pick for best eyelash growth serum is the Borboleta Lash Serum, as it's ophthalmologist- and clinically-tested, has a thin consistency and great ingredients, and it proved to noticeably improve lash length in our testing process. If you're looking for quick results, the RapidLash Eyelash Enhancing Serum delivers on length, too.

Our Top Picks

Highlighted Ingredients: Biotin, peptides, keratin, plant-based stem cells | Cruelty-Free: Yes

Powered by a blend of biotin, peptides, keratin, and plant-based stem cells, this cruelty-free, ophthalmologist-tested, and clinically tested lash growth serum seriously impressed us. With just one swipe of the small brush across the lash line, we were able to apply the serum quickly and easily. The thin consistency dried down within seconds, and it didn’t leave a heavy or sticky residue on our skin or between our lashes.

While we didn’t notice a difference in the density or thickness of lashes, we were blown away by how well this serum worked at lengthening them. After consistently using the serum throughout our 10-week test, we noticed a significant improvement in the length of our eyelashes. The difference was so noticeable that a coworker (who had no idea we were testing a lash serum) complimented our eyelashes, a welcomed first for us. If length is what you hope to improve, we highly recommend this formula.

Highlighted Ingredients: Amino acids | Cruelty-Free: No

If you have sensitive skin or sensitive eyes, you may hesitate to use a lash serum. However, there are options that may work for you without causing irritation, such as this one, which did not irritate our tester's eczema-prone eyelids. Another plus: The formula has been ophthalmologist tested and utilizes the power of amino acids to help fortify lashes that have been damaged by consistent makeup wearing. What's more, the brand claims that this formula minimizes the amount of lashes that fall out during the makeup removal process.

Highlighted Ingredients: Peptides, amino acids, hyaluronic acid | Cruelty-Free: Yes

Chances are, you’ve either seen ads for the ultra-popular Grande Cosmetics GrandeLash-MD growth serum or you know someone who’s tried it. We are seriously impressed by how well it thickens lashes and brows. Our hairs appeared fuller, felt stronger, and were noticeably more resistant to breakage.In terms of the application, the fine brush applicator makes for a mess-free, targeted distribution without having to constantly re-dip into the tube. Do note that if you get the formula into your eyes, you might experience significant eye sensitivity. So, while we highly recommend this for people who are looking to thicken their lashes, we suggest taking your time to apply it very carefully.

Highlighted Ingredients: Peptides, biotin, amino acids | Cruelty-Free: Yes

Eyelash growth serums require a consistent application and a whole lot of patience before you notice results; that’s just the nature of these products. But, with this pick, we noticed an immediate thickening and lengthening within a few weeks as lashes went from short and stubby to longer and more uniform.We also loved that the brush picks up just the right amount of the formula, and once applied, it absorbs within a matter of seconds without causing any irritation. Though it’s not a budget option by any means, this one is relatively easy to find, making it a great option for those hoping to lengthen their lashes ASAP.

Highlighted Ingredients: Rhamnose, hyaluronic acid, Vichy volcanic water | Cruelty-Free: No

This serum combines your eye cream and eyelash serum application into one easy step, making it an excellent option for those who like to keep their beauty routines quick and easy. The formula doubles as an anti-wrinkle serum for the delicate skin in the eye area, as well as a lash fortifying and conditioning serum. You simply pump out some product onto your fingertip and apply it to the eye area, making sure to sweep a bit of it across your lash lines and gently coat your eyelashes.Although the pump applicator might be hard to control (it can dispense too much product), the results make using the serum well worth the inconvenience. After the full ten-week testing period, we saw a real improvement in the strength and fullness of our lashes. We also love that the formula helps reduce the number of lashes that fall out during makeup removal.

Highlighted Ingredients: Peptides, biotin, amino acids, vitamin B | Cruelty-Free: Yes

There’s no denying that this lash growth serum is expensive, but the results are very noticeable, so we can justify the price tag. Formulated with a blend of peptides, biotin, amino acids, and vitamins, the formula works to strengthen the lashes, protect against breakage, and significantly lengthen the eyelashes. We noticed eyelashes feeling stronger and more resistant to breakage throughout the testing period, but the dramatic improvement in the length of lashes is what really stood out. Between how well it works for lengthening and strengthening, how easy it is to apply, and how comfortable it is, this one has our stamp of approval.

FAQ

• How do lash growth serums work?

  Lash growth serums essentially stimulate your eyelash hair follicles and keep them in the anagen phase (the active stage of the hair growth cycle). Formulas usually contain nourishing and strengthening ingredients, like biotin, peptides, and amino acids as well.

  You'll also find lash growth serums formulated with prostaglandins. Though the mechanism isn't very well understood, this class of ingredients has a hormone-like response that tricks the normal hair-growth cycle, effectively stopping the resting phase and stimulating growth wherever it's applied.
  

• Are lash growth serums safe?

  Though eyelash growth serums are generally considered to be safe, Henry shares that there are some potential risks and side effects to keep in mind. “Some people may experience irritation, redness, or itching around the eyes, especially if they have sensitive skin,” she explains. “In rare cases, eyelash growth serums can cause changes in the color of the iris or the skin around the eyes. It's also possible to experience eyelash breakage or brittleness if the serum is overused or applied incorrectly.”
  

  If you have sensitive skin or eyes, it’s wise to consult with your doctor before trying one out. Henry also stresses that in order to ensure you’re using a lash growth serum safely, it’s important to follow the manufacturer’s instructions carefully. She also says to avoid getting the serum in your eyes and be sure to wash your hands after application.

• Can you use lash growth serums with eyelash extensions?

  According to Imani, you can pair lash growth serums with eyelash extensions. She recommends opting for a formula that focuses on lash health to strengthen your natural lashes throughout the life of your extensions.

• How long do lash growth serums take to work?

  On average, it'll take anywhere from three weeks to two months for a lash growth serum to start working. It may technically begin working sooner, but the growth will likely be too small to see with the naked eye until a bit later.

  But bear in mind that this isn't a once-in-a-while treatment like a hair mask. You'll have to use the product every day (potentially twice a day), as directed, to achieve the desired results.

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