7 Best Eyebrow Growth Serums for Fuller Brows, Tested in 2026

Do eyebrow growth serums really work?

Yes, but they need to be used consistently over many weeks to months, says Dr. Portela. The most effective option for regrowth is a prescription product called Latisse. Still, if a doctor’s visit is out of the question, OTC beauty products containing the right ingredients (plus a little bit of patience) will also do the trick.

Look for a prostaglandin or prostaglandin analogue such as bimatoprost, which is found in the prescription-strength formula Latisse, or isopropyl cloprostenate, which is like what you’d find in GrandeLash, says Geeta Yadav, MD, a board-certified dermatologist and founder of Facet Dermatology. Both of these active ingredients encourage hair growth. Still, other notable ingredients in a formulation include peptides and amino acids to support brow growth directly, and hyaluronic acid or vitamin E to hydrate and protect the skin, says Dr. Portela.

Can you regrow sparse eyebrows?

In most cases, yes. “As long as the follicle is still functional, you should be able to regrow your brows,” says Dr. Engelman. That said, overplucking or overwaxing the brows can permanently kill hair follicles, and if that’s the case, hair may not grow back. “Thankfully, there are numerous solutions for growing back brow hair if the follicles are still active, including topical serums, supplements, diet adjustments, etc,” she says.

Are the brow serums with hormones the most powerful?

“Generally, brow growth serums that contain prostaglandin analogs are considered more powerful and effective than brow growth serums that do not contain these hormones,” says Dr. Engelman. She goes on to explain that prostaglandin analogs are proven to be effective at supporting brow growth by extending the anagen (growth) phase of the hair cycle. “While there are some good prostaglandin-free formulas out there, typically better and faster results come from serums that do contain prostaglandins. When looking to purchase a brow serum, always do your research and check for clinical testing and verified before-and-after results,” she says.

Note: There may be a risk of irritation, itchiness, and redness, particularly with individuals who have sensitive skin when using a brow serum with hormones, according to Dr. Engelman. “The more serious risks are associated with the eye area (more commonly with lash growth serums), where in some rare cases, prostaglandin analogs were linked to hyperpigmentation of the skin and even the iris of the eyes,” she says.

How long does it take to see results from an eyebrow growth serum?

You can expect to see results in anywhere from one to three months, depending on the product and its ingredients. Both derms and makeup artists agree that consistency is key. If you’re looking to regrow your eyebrows as quickly as possible, use it consistently and don’t skip days for the best, fastest results.

What should you avoid doing if you want thicker brows?

Don’t overpluck them, Dr. Engelman says. “Overplucking can lead to permanent loss of brow hair. I recommend tweezing only the hairs that fall outside of your natural brow shape, or leave it to the pros to pluck, wax, or thread unwanted hairs every few weeks,” she says. It’s also key to be careful about which skin care ingredients you use in the brow area. “Potent ingredients like retinol can actually interrupt hair growth and result in hair loss, so it’s best to avoid applying them on the brows,” she says. If you have sensitive or acne-prone skin, products that irritate or clog pores can also interfere with eyebrow follicles, so the gentler, the better for this area.

How long can you use a growth serum?

Most brow serums are safe to use long-term, as long as you’re not experiencing irritation. In fact, consistency is key—many formulas stop working once you discontinue them, since they support the growth cycle rather than permanently changing it. Experts generally recommend using a serum daily for 8 to 12 weeks before expecting noticeable results, then continuing regular use to maintain them. If you’re using a prostaglandin analogue (like bimatoprost or its derivatives), check with your dermatologist first, especially if you have sensitive skin or eye concerns.

Do eyebrows regress if you stop using growth serum?

Yes. Once you stop applying a brow serum, your results will gradually fade. Most formulas work by conditioning hair or stimulating the growth phase of the follicle, but they don’t permanently change how your brows grow. Over several weeks to months, your eyebrows typically return to their baseline fullness and density. To maintain results, dermatologists recommend continuing regular use or shifting to a maintenance schedule.