Angled view of BROW serum tube and wand with before-and-after brow photos, purple background, text ‘Own Your Brow Comeback’

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Woman applying NULASTIN Brow Shape Altering Serum with close-up of the applicator brush

Photo infographic showing Results after 12 weeks — +100% saw visible brow growth and +97% noticed brows appeared fuller

Front view of Brow Shape Altering Serum tube showing slim metallic packaging and angled brush applicator on white background

Timeline showing visible brow results — 0–3 weeks: elastin activates at the hair follicle root; 3–6 weeks: start seeing subtle, visibly denser brows; 6–12 weeks: brows appear thicker and fuller

Front view of Allure x BROW Shape Altering Serum tube showcasing angled brush applicator on white background

Labeled benefits graphic showing Signal Proteins, Elastin Protein, and Keratin Protein with brief eyebrow benefits

This stuff works!!

The SKIMM x BROW Shape Altering Serum

, 1 of 2
, 2 of 2

Get your brows back with our top rated NULASTIN eyebrow serum, clinically proven to visibly restore shape, density and fullness. Voted Best Brow Treatment by SHAPE Beauty, see noticeable results in 6 weeks and triple the wow in 12.

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Delivery Every 6 weeks

1 tube is approximately a 5-6 week supply when used 2x daily

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This stuff works!!

Read More Reviews

This Works!! I was skeptical at first but after 6 weeks I already see major growth. If you are thinking about it, just do it!! You wont regret it.

Becki

Enhances Visible Thickness
Amplifies Look of Fullness
Shapes & Defines

Cruelty Free

Dermatologist Tested

Paraben Free

NULASTIN eyebrow serum features Elastaplex® Technology, a proprietary blend of biodesigned proteins and signal peptides formulated to boost elastin—the protein that anchors hair. This breakthrough technology helps minimize fallout and premature shedding by fortifying follicles at the root, resulting in visibly thicker, fuller looking brows.

Start with clean, dry eyebrows.
Use the applicator to apply BROW Shape Altering Serum in short, upward brush strokes onto the eyebrows, after skincare and before makeup application.
Apply twice daily, AM & PM.
The custom spoolie applicator is designed with synthetic bristles to pick up and deposit the ideal amount of serum for each brow.

WARNING: Use only as instructed. For external use only. This cosmetic contains a small amount of Isopropyl Cloprostenate, an analog of prostaglandin. Avoid getting serum in eyes; in the event of direct contact, rinse with cool water. If redness or irritation occurs, stop using the product. If irritation or redness persists, consult your doctor. If you tend to have sensitivity to products, we recommend a patch test before use. Do not use if you are pregnant or nursing. If you are being treated for any eye or serious medical condition, consult your doctor prior to use. Keep out of reach of children.

For more information, visit: NULASTIN Trials and Studies

Biodesigned Signal Peptide

[Myristoyl Pentapeptide-17]

A biomimetic, five amino acid peptide that supports active melanocytes & keratinocytes to strengthen eyebrows, enhance brow color, and increase visible brow density.

Biodesigned Elastin

[sh-Polypeptide-50]

A biomimetic, full length elastin protein that helps supplement elastin where it is most needed to anchor the brow follicle– minimizing fall out and maximizing visible brow density, fullness and shape.

Biodesigned Keratin

A biomimetic, full length keratin protein that helps supplement keratin where it is most needed to strengthen the brow hair follicles.

Biodesigned Hepatocyte Growth Factor

[sh-Polypeptide-62]

A biomimetic, full length signal protein that collaborates with natural growth factors to support anagen (growth) and catagen (transition) phases to promote visibly thicker, fuller brows.

Biodesigned Isopropyl Cloprostenate

A biomimetic, analog of prostaglandin included at a specific concentration to safely and effectively support natural brow growth for visibly enhanced eyebrows..

INGREDIENTS/INGRÉDIENTS: Aqua/Water/Eau, Myristoyl Pentapeptide-17, Glycerin, sh-Polypeptide-50 (Elastin), Keratin, Carbomer, Sodium Phytate, Sodium Phosphate, Sodium Chloride, sh-Polypeptide-62, Isopropyl Cloprostenate, Sodium Hydroxide, Phenoxyethanol

Get Your Brows Back

Restore visible shape, density and fullness in as soon as 6 weeks, with even more results over time.

Week 0

Close-up of eye and eyebrow labeled Before showing thin lashes and a sparse brow

Week 12

Close-up of a woman's eye and eyebrow showing longer, fuller lashes and a fuller brow after using a lash and brow serum

Week 0

Week 12

Week 0

Week 12

Week 0

Week 12

Week 0

Week 12

Close-up of eyebrow showing fuller, thicker brow after 12 weeks of BROW Shape Altering Serum

Week 0

Week 12

Clinically Proven to Boost the Look of Brows and Confidence

100 %

saw visible brow growth*

97 %

noticed brows appeared fuller*

97 %

had more confidence in their appearance*

Close-up of brow serum spoolie applicator showing bristled brush and two droplets on a lavender surface with glass dish

* Based on the results of a 12-week independent clinical study.

Smiling woman applying brow serum with a wand while looking into a mirror

Get Into a Routine

Great brows don’t require hours of effort. Your routine for visible results: Two swipes, twice a day. With consistency, it's that easy.

1 BROW Tube = 6 Weeks
2 BROW Tubes = 12 Weeks

Pro Tip: Take a before shot and look at it daily. It’s a great way to stay motivated—and stay on track.

Eyebrow close-up showing sparse hairs and visible skin texture before treatment

Week 0-3

Elastin begins to activate at the root of the hair follicle.

Close-up of a brow showing visibly denser hairs along the arch after 3–6 weeks of serum use

Week 3-6

Start seeing subtle changes, like visibly denser brows.

Close-up eyebrow showing thicker, fuller hairs after weeks of twice-daily brow serum use on light skin

Week 6-12

Continue ongoing application for more progress and to maintain beautiful, lasting results.

Skimm'r Exclusive

Save 30% Today

Code: THESKIMM30

Skimm'r Exclusive

Save 30% Today

Code: THESKIMM30

Skimm'r Exclusive

Save 30% Today

Code: THESKIMM30

Watch BROW Serum at Work

Destiny

Badiya

Shannon

Try it, Love it or Get Refunded.

We have a 100% Performance Guarantee, so you can shop with confidence—completely risk free. (T&C's Apply)

NULASTIN BROW Serum Reviews

Front view of two NULASTIN Brow Serum tubes held by a model to show product size and packaging on a gray background

Frequently Asked Questions

Got a question about BROW serum? The answer may be right here or you can check our full list of FAQs.

All of our products are designed for ease of use and can be applied under makeup with little or no wait time. For best results, use twice daily to clean, dry eyes and/or skin.

Consistency is the key to lasting results, but don’t stress out if you skip an application. If you do miss a few days, just start back up and use daily as directed. We don’t recommend trying to “catch up” with a loading dose or duplicate applications for our LASH, BROW, or HAIR products. Our skin care products can be used as much as desired—multiple times daily.

During the 12-week clinical study, no subjects experienced adverse events relating to the BROW Shape Altering Serum.