Dealing with Sparse Brows? Try These 12 Expert-Backed Serums (2025)

Multiple derms mentioned RevitaBrow as their top choice for eyebrow growth. “It has peptides, biotin, lipids, and panthenol, which in combination can condition and strengthen brow hair while preventing brittleness and leading to shine and fullness,” says board-certified dermatologist Matthew Elias. Apply the product nightly for the best results.

• Key ingredients: Peptides, biotin, lipids, green tea, ginseng, calendula
• Size: 3 milliliters

Customer review: “I can’t even begin to tell you the difference this has made in my eyebrows. Before this, they were sparse and fell out easily. Now, they are fluffy and full. I feel 10 years younger!”—Kate

The beauty of this affordable serum from The Ordinary is that it works on both brows and lashes. It uses caffeine, camellia sinensis leaf extract, and four peptide complexes to nourish hair while increasing its density. Swipe on the serum twice daily, and expect to see increased length and volume in about four weeks.

• Key ingredients: Peptides, caffeine, trifolium pratense flower extract, camellia sinensis leaf extract
• Size: 5 milliliters

What our editors are saying: "This is one of the least expensive brow and lash serums out there, but it still packs a punch with proven hair-health ingredients like caffeine and peptides." – Jenna Rosenstein, beauty director

This top-rated serum from Obagi Medical targets the anagen phase of the brow growth cycle, when hair follicles actively produce new hair cells and lengthen existing hairs. And, it contains hyaluronic acid to keep your skin happy, too.

The powerful formula works best when applied to freshly cleansed skin, before the rest of your skincare routine. With nightly use, you may see sparse spots start to fill out within a few months.

• Key ingredients: Biotin, panthenol, lipid compound, hyaluronic acid
• Size: 6 milliliters

Customer review: “Be consistent. [It] took about four weeks for me to see them filling in. Now, two months later, they are completely full. My esthetician noticed it and asked what I was using.”

• Key ingredients: Biotin, peptides
• Size: 8 milliliters

What our editors are saying: “My brows thinned a lot after having my son, but Olaplex’s brow serum helped bring them back to life. It works!” —JR

Grande Cosmetics' cult-favorite GrandeLash serum is a known favorite of Bazaar beauty editors and TikTok ophthalmologists—and the brand's brow serum is no different. The hair growth treatment can be applied morning and night, thanks to a clear, non-greasy formula that plays nice with brow pencils and tinted gels. If you're a textbook over-plucker, this one's for you.

• Key ingredients: Amino acids, isopropyl cloprostenate, hyaluronic acid, vitamin E
• Size: 3 milliliters

What our editors are saying: "I'm an avid fan of the brand's lash serum, and the brow serum works just as fast but with a wider applicator, which makes it easy to apply on the brow." —Katie Intner, beauty market and commerce editor

Those on a tight budget can still enjoy thicker, fuller brows with this Amazon reviewer-loved serum. It features a blend of peptides and botanical extracts that support hair growth without irritating your skin or eyes. At $20 per bottle, it's significantly more affordable than other brow serums on the market.

• Key Ingredients: Myrostoyl hexapeptide-16 and myrostoyl hexapeptide-17 complex, biotin, hyaluronic acid, swertia japonica extract
• Size: 3 mililiters

Customer review: “I have naturally thick eyebrows; however, years of waxing and plucking have caused some sparseness. Since using Lavish Lash, I’ve noticed growth. I will definitely recommend and buy this product again.”—Cynthia

The brand behind culty skincare essentials like The Rich Cream and Ultimate Soothing Cream now has a gentle, two-in-one serum for brows and lashes. It uses Augustinus Bader's signature Trigger Factor Complex, a proprietary blend of natural amino acids, high-grade vitamins, and peptides, to boost hair growth and thickness in as little as four weeks.

• Key ingredients: Roselle extract, safflower extract, biotin, hyaluronic acid, castor Oil
• Size: 8 mililiters

What our editors are saying: "This formula is easy to apply on both brows and lashes, thanks to the flexible brush. Plus, it never irritates my skin." —KI

Despite being effective, serums with prostaglandin analogues like isopropyl cloprostenate and bimatoprost can often cause irritation. So, if you’ve got sensitive skin or eye issues, start with this gentle L37 Lash and Brow Serum from Typology. The vegan formula is 96 percent naturally derived, with powerhouse ingredients like castor oil, pea peptides, and panthenol.

• Key Ingredients: Pea peptides, castor oil, biotinyl-GHK, panthenol
• Size: 15 milliliters

Customer review: “I’ve been using it every night for about one month. My lashes are supple and seem longer and better curved. My eyebrows that had disappeared due to over-invasive plucking are starting to grow back.”

Created by the hair growth experts at Vegamour, this popular GRO Brow serum is safe for daily use on sensitive skin. The vegan formula harnesses the power of natural plant actives, including mung beans and red clover. You should start to notice visible results after one to two months of consistent application.

• Key ingredients: Lactic acid, biotin, zinc, red clover, mung bean
• Size: 3 mililiters

Customer review: “I’ve used this product for about three years, and slowly but surely, my over-plucked brows have thickened. Great product, easy on my sensitive skin.”—Edie

There's a reason this brow-enhancing serum has rapid in its name. It's packed with fortifying proteins, hair growth-stimulating polypeptides, and nourishing plant extracts to help you experience healthier, fuller-looking brows in mere weeks. The gel formula goes on clear and sets brows in place for hours, so it's great for daytime use.

Key ingredients: Keratin, biotin, vitamin B5, polypeptides, apple fruit cell extract, sweet almond extract

Size: 3 mililiters

Customer review: “It's working quickly. I have been using RapidLash for a little over three weeks, and I already have visible results. More hair is growing, filling in the bald spots.”

You've probably seen this viral brow growth serum in many GRWM videos, whether you realized it or not. Kosas's GrowPotion formula is vegan, cruelty-free, and 97 percent naturally derived, making it a popular pick for the clean beauty crowd. The product's key ingredients, including hyaluronic acid, vegan keratin, and peptides, can help thicken and lengthen your lashes, too.

Key ingredients: Peptide trio, vegan keratin, provitamin B5

Customer review: “I have one eyebrow that is very overplucked, and I’ve only been using it on that eyebrow...I can see a sustained difference. It’s not just one or two hairs; my eyebrow looks better and more balanced with the other one.”

Sick of penciling in sparse patches? Try this popular, prostaglandin-free eyebrow growth serum from Milk Makeup. As part of the brand's viral Kush line, it's powered by hemp-derived cannabis seed extract, which keeps brows (and lashes!) hydrated and conditioned for optimal growth. The tiny applicator tip makes it easy to target specific parts of your brows that need a boost.

• Key ingredients: Cannabis seed extract, plant peptides, quinoa, aloe, vitamin B5
• Size: 3.5 mililiters

Customer review: “I have naturally thick eyebrows, but they’re thinner on the tail. After finishing a whole tube of this, my brows look so much fuller! I also have super stubby lashes, and while the difference in my lashes isn’t super dramatic, I have definitely noticed they’re longer and fuller.”

• Elizabeth Bahar Houshmand, M.D., is a double board-certified dermatologist at Houshmand MD Dermatology in Dallas, Texas.
• Sarika Snell, M.D., F.A.A.D., is a board-certified dermatologist based at Integrated Dermatology of 19th Street in Washington, D.C.
• Matthew Elias, M.D., is a board-certified dermatologist based at Elias Dermatology in Fort Lauderdale, Florida.

Yes, eyebrow growth serums are generally considered safe. But, if you experience itching, swelling, or redness in the area, discontinue use and contact your doctor. “These are signs you could be allergic to the ingredients,” Houshmand warns. We recommend patch-testing any product on your inner forearm before using it on your brows themselves.

Prostaglandin analogues, a common ingredient in serums for eyebrow and eyelash growth, are highly effective at stimulating hair growth, but they come with potential side effects like skin irritation and darkening. Products with prostaglandin should not be used during pregnancy.

In short, yes. Eyebrow growth serums work by stimulating the growth of new hair and helping existing hairs grow longer and stronger. And just so you know, overused tweezers aren't exclusively to blame for hair loss. Thinning can be caused by a variety of factors that are hard to control, including diet, stress, and hormones.

Even the best brow growth serum on the market can't magically give you Cara Delevingne-level brows overnight. Just like any other treatment serum, such as lash serums or retinol, the key to growing out your brows is patience and persistence. Due to hair growth cycles, you'll need to use a product for multiple weeks to months to start seeing visible results.

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