If your lashes and your brows both look thinner than they used to, buying two separate serums, learning two routines and paying twice is a lot to ask. A growing number of serums are made to do both jobs from one bottle, and for most people that is the simplest way to get visibly longer lashes and fuller brows at the same time.
But "lash and brow" on the box does not always mean the same thing. Some products are formulated and directed for both. Others are lash serums with a brow version sold separately. We compared the best eyelash and eyebrow growth serums that are labeled for both, looking at ingredients, how much you get for the price, how often you apply them and who each one suits.
Quick answer: our top pick for the best lash and brow growth serum is Shigeru Lash & Brow Growth Serum. It is the prostaglandin-free formula our salon lash artists use every day, it is made for lashes and brows from the start, and a full 5 ml bottle covers both for 60 days.
Best lash and brow serums of 2026: quick comparison
| Serum | Key ingredients | Size and price* | Best for |
|---|---|---|---|
| Shigeru Lash & Brow Growth Serum | Ten amino acids, Fo-Ti, Blue Lotus | 5 ml, $69 | Best overall |
| IGK Look Out Lash & Brow Boosting Peptide Serum | Copper tripeptide-1, acetyl tetrapeptide-3, biotin | 0.11 oz, $49 | Once-a-night routine |
| The Ordinary Multi-Peptide Lash and Brow Serum | Four peptides, caffeine, panthenol | 5 ml, $14.90 | Tight budgets |
| e.l.f. Enhancing Lash & Brow Serum | Hyaluronic acid, green tea, ginseng, castor oil | 0.12 oz, $8 | Lowest price |
| Vegamour GRO lash and brow serums (pair) | Red clover, mung bean sprout, acetyl tetrapeptide-3 | 3 ml each, $68 each | Plant-focused shoppers |
*Brand or major retailer list prices in October 2026. Prices and formulas change, so check the current label before you buy.
Can one serum really work on lashes and brows?
Yes. Lashes and brows are both short, keratin-based hairs that grow in cycles of growth, transition and rest, and both tend to thin with age, overgrooming, harsh makeup removal and rubbing. A serum that nourishes the hair and the skin it grows from can help both. The differences are practical: brows have a longer growth cycle, so they usually take a little longer to show change, and the brow area can handle a slightly more generous application than the lash line.
What to check before you use any lash serum on your brows, or the other way round:
- The directions. Use it on both only if the label says so. Several popular lash serums, including some that contain prostaglandin analogs, are sold as lash-only products with a separate brow version.
- The ingredient list. Prostaglandin analogs such as isopropyl cloprostenate can cause irritation or darkening of the skin where they are applied in some users. Applied across a whole brow, that is a larger area of skin. If you want one bottle for both, a prostaglandin-free formula keeps things simple.
- The bottle size. Brows use more product than lashes, so a dual-use serum runs out faster. Compare how long a bottle lasts when used on both, not just the sticker price.
The 5 best lash and brow growth serums
1. Shigeru Lash & Brow Growth Serum: best overall
Our serum was created for the lash artists in our Beverly Hills and New York salons, who wanted one product they could recommend to every client for both lashes and brows. It is a prostaglandin-free blend of ten amino acids, the building blocks of the keratin that lashes and brows are made of, with Fo-Ti, a botanical long used in traditional Asian hair care, and soothing Blue Lotus flower extract.
- Why it is our top pick: it was designed for lashes and brows from the start, so one routine nourishes and strengthens both.
- Salon proven: it is the serum our own lash artists use every day.
- Gentle enough for sensitive eyes: we have used it on hundreds of salon clients with no reported reactions.
- Extension safe: the formula is oil-free, so it will not weaken lash adhesive.
- Results: used morning and night, most people see visibly longer, fuller lashes and brows in about 30 days, with the fullest results at around 60.
- Value: a 5 ml bottle covers lashes and brows for 60 days at $69. Multi-packs bring the price down: $118 for two, $162 for three.
- Clean: vegan, paraben-free and cruelty-free.
Best for: anyone who wants visible results on lashes and brows from one gentle formula. See Shigeru Lash & Brow Growth Serum.
2. IGK Look Out Lash & Brow Boosting Peptide Serum: once-a-night option
IGK's serum combines copper tripeptide-1 and acetyl tetrapeptide-3 with biotin and red clover flower extract. No prostaglandin analog appears on the ingredient list. It is applied once a night to the roots of the brows and along the upper lash line, and IGK describes it as silicone-free, fragrance-free and cruelty-free.
Best for: people who want a single nightly step for lashes and brows.
3. The Ordinary Multi-Peptide Lash and Brow Serum: best budget pick
This serum uses four peptides with caffeine, panthenol and plant extracts, with no prostaglandin analog listed. It is applied along the lash line and brows morning and evening, and the brand labels it oil-free, vegan and cruelty-free. At under fifteen dollars for 5 ml, it is an easy way to try a dual-use peptide serum.
Best for: anyone who wants a low-cost starting point.
4. e.l.f. Enhancing Lash & Brow Serum: lowest price
e.l.f.'s serum combines sodium hyaluronate, larch wood, green tea and ginseng extracts with a little castor seed oil, and no prostaglandin analog is listed. It is applied to the lash lines and brows morning and night, and the brand says it is vegan and cruelty-free. Because the formula contains an oil, check with your lash artist before using it near extensions.
Best for: trying a dual-use serum for the price of a mascara.
5. Vegamour GRO Volumizing Lash and Brow Serums: plant-based pair
Vegamour sells its lash serum and brow serum as two products with the same plant-based formula, built on red clover and mung bean sprout extract with acetyl tetrapeptide-3. No prostaglandin analog is listed. Each is applied up to twice a day, and the brand says to expect visible lash results in as soon as four to six weeks. Buying both costs $136.
Best for: plant-focused shoppers happy to buy two tubes.
Lash serum or brow serum: which roundup do you need?
If you only want to treat one area, our separate guides go deeper. For lashes alone, including prostaglandin formulas and prescription options, see our list of the best eyelash growth serums of 2026. For brows alone, see the best eyebrow growth serums. If you want both from one bottle, the five serums above are the place to start.
How to use one serum on lashes and brows
- Start clean. Remove makeup and contact lenses, then pat the area dry.
- Lashes first. Sweep one thin stroke on the lid just above the upper lashes, and just below the lower lashes if your directions say so. One stroke per eye is enough.
- Then brows. Brush the serum through each brow so it touches the skin beneath the hairs, focusing on sparse areas and the tails.
- Let it dry. Wait two to three minutes before makeup or skincare.
- Follow the schedule. With Shigeru, that is morning and night. Other brands use once a day or once at night.
- With extensions: apply at the lash line, not along the extensions, and wait until your lash artist says the bond has set.
Lash and brow serum with extensions
Natural lashes can break and shed early with any lash enhancement, from strip lashes worn for a night out to salon extensions. Each extension is attached to a single natural lash, so a stronger base lash gives it a better foundation. That is why so many of our salon clients use a serum: more healthy lashes to work with means fuller coverage and extensions that last longer between fills. Choose an oil-free formula so it does not weaken the adhesive.
How long until you see results?
Lashes usually respond a little faster than brows because their growth cycle is shorter. With Shigeru, most people see visibly longer, fuller lashes and brows in about 30 days and the fullest results at around 60. Other brands quote four weeks to a few months. Results fade gradually if you stop, as hairs return to their natural cycle, so most people keep a serum in their routine.
Our verdict
If you want one bottle that is gentle, prostaglandin-free, safe with extensions and made for lashes and brows from the start, Shigeru Lash & Brow Growth Serum is the best lash and brow growth serum for most people. It is the formula our lash artists trust on their own clients, a 5 ml bottle covers both areas for 60 days, and most people see visibly longer, fuller lashes and brows in about 30 days.
IGK suits people who want a single nightly step, The Ordinary and e.l.f. are inexpensive ways to try a dual-use serum, and Vegamour is a plant-based pair if you do not mind two tubes.
Shop Shigeru Lash & Brow Growth Serum
Lash and brow serum FAQs
Can I use eyelash serum on my eyebrows?
Only if the directions say it is for both. Many serums, including ours, are made for lashes and brows. Some lash serums are labeled for lashes only, with a separate brow product.
Is a lash and brow serum as effective as two separate serums?
It can be. What matters is the formula and daily use, not whether the bottle is labeled for one area or two.
Are lash and brow serums safe for sensitive eyes?
Many people with sensitive eyes do well with a prostaglandin-free serum. Patch test first and stop if you notice irritation. Our guide to whether lash serums are safe explains what to watch for.
Can men use a lash and brow serum?
Absolutely. Lash and brow hair grows the same way for everyone.
Want more lash, brow and skincare tips? Follow us on Instagram at @shigerubeauty for new guides and tips as we publish them.
This article is for general information and compares publicly listed ingredients and prices. Brand names belong to their respective owners. If you have ongoing lash or brow loss or eye irritation, please speak with your doctor or an eye care professional.
The Shigeru Beauty Team