6 best lash and brow serums that leave eyelashes longer and brows fuller (2025)

Score: 85/100

With our lab test showing an impressive 14% increase in length and 8% improvement in volume of lashes, it’s no surprise that this serum topped our test.

The majority of our panel noticed an improvement in their lashes within 5-6 weeks, with many commenting that their lashes looked longer and the conditioner even made their mascara look better. The product was easy to use thanks to a thin applicator brush and it dried quickly upon application.

Key specifications

Score: 79/100

Invisible when applied, this product scored highly with our testers for ease of use, design and product instructions. They also liked the lightweight consistency as it didn't feel too heavy or oily.

Many noticed an improvement in the fullness of their brows and saw growth where hair was normally sparse. They also said the hair looked thicker and felt stronger.

There was a slight cooling effect when applying the product, which our panel found refreshing. There was no residue left on the brows when used at night and it didn't stain clothing or bedsheets either.

Key specifications

Score: 77/100

This lightweight, non-greasy product, again from Talika, did well in our lab test, managing to improve lash volume by 8% over an eight week period.

Testers loved the consistency of the formulation, which wasn't sticky or greasy, and almost everyone agreed that it wasn’t too heavy. Lashes were left feeling conditioned, glossy and more separated, too.

Most testers said they noticed a growth in areas where hairs were normally sparse as well as improvements in the length of their lashes – one even stopped using their lash extensions because they were so happy with the results.

Key specifications

Score: 76/100

Our best budget eyelash serum did a great job at helping our panellists' lash lines look fuller – all for under £20.

Testers noticed lengthening results in under a month and most said they didn't experience any irritation. Lashes were left looking "refreshed" and feeling more moisturised, while everyone liked that the serum was invisible once applied.

Key specifications

Score: 72/100

This premium growth serum is definitely an investment, but it aced our lab test for volumising and lengthening lashes.

Enriched with vitamin B3, it left our panel with longer, thicker lashes that also looked healthier overall. The brush allowed our testers to deposit their desired amount of the lightweight, gel-like product, helping to eliminate any wastage. It dried quickly, without leaving a sticky or oily residue, with the majority reporting improvements in four weeks.

Key specifications

Score: 71/100

Testers noticed an improvement in their brows in just three to four weeks of using this product. They also raved about how it improved the condition of their lashes and made them feel softer.

When it came to brows, the majority of testers noticed more growth in areas where the hairs were sparse or over-plucked, such as the under brow.

They said hair grew thicker and stronger as well. Mascara went on easily over the product and most testers agreed that the formulation wasn't irritating to the eyes or skin.

Key specifications

The verdict on brow and lash serums

Our lab tests proved that our winning lash serum, the RevitaLash Advanced Eyelash Serum can deliver some serious results in just a few weeks, so it’s worth the investment if you want longer, thicker lashes. But there’s no need to break the bank for a bolder look, as the Mavala Double Lash serum is the most affordable on our list (at under £20), yet still received praise from our testing panel for its lengthening abilities.

If brows are where you want to focus on regrowth, then we suggest trying Talika's Lipocils Expert Eyebrow Serum, a lightweight formula that left our panellists' brows feeling thicker.

Why trust the Good Housekeeping Institute

The Good Housekeeping Institute has been reviewing products for over 100 years, rigorously testing everything from the best activity trackers and best pan sets to the best cleaning products and best night creams, each with the same level of patience and precision. We conduct tests in the lab and send products out to our at-home panel, to give us the most accurate feedback on product performance.

Orla Badger, the lead tester on this trial, has extensive knowledge of skin and hair composition thanks to her first-class bachelor's degree in cosmetic science from the University of the Arts London. She's also spent time as a formulation chemist for beauty brands, so she understands product development, and what to look out for in ingredient lists.

Our lifestyle writer Madeleine Evans analysed all our testing results to create the most accurate and helpful review possible. Maddie has tested and written about hundreds of beauty products and after a stint of using lash extensions, she swears by the RevitaLash serum, which helped nurse them back to full health!

24 April 2025: We updated this article to reflect the latest prices and stock levels. We also added in links to other relevant Good Housekeeping articles.