KEY TAKEAWAYS
- Brow hairs follow a natural growth cycle: an active growth phase of roughly 30-45 days, followed by a resting phase. That’s why the earliest weeks are often about consistency, with visible changes taking time to appear.
- In a 12-week clinical study of NULASTIN® BROW Shape Altering Serum, 97% of participants reported fuller-looking brows, and up to 60% reported thicker-looking brows.
- Visible changes may begin around the 6-week mark, with results continuing to build through week 12.
- NULASTIN's Elastaplex® Technology is formulated to support the brow's elastin root system, the connective structure that helps anchor each follicle.
Great brows aren’t built overnight. They’re built with consistency.
From day one, NULASTIN® BROW Shape Altering Serum is designed to support each hair follicle throughout your brows’ natural cycle, even before those changes become visible in the mirror.
So what’s actually happening while you wait for the results to show? We’re breaking down the journey from your first application through week 6, plus what continued use through week 12 can mean for your brows.
Your BROW Results at Week 1
In your first week, something incredible is happening beneath the surface: your eyebrow hair follicles are being primed for optimal function.
Our formula is hard at work fortifying your elastin root system, the foundation of fuller, healthier looking brows. Think of this week as laying the groundwork for something beautiful. You may not see dramatic changes in the mirror just yet, but every day brings you closer to visible results that will have you beaming with confidence.
This is also when it can be tempting to give up. Don’t. Week 1 isn’t the payoff. It’s the setup. Keep applying twice daily and give your elastin root system – and your brows – the time they need.
Preparing Your Brows for Results
As you begin your brow journey, the right care can help set you up for success. You can maximize and even accelerate your results with our BROW Shape Altering Serum by establishing a routine that lays the groundwork for visible fullness. We recommend the BROW Shape Altering Serum 2-Pack to ensure you have enough product on hand to stay consistent throughout the full journey.
Set the stage for your brow comeback with these brow care tips:
Avoid Overplucking
Overplucking can damage hair follicles and interfere with future growth. Give your brows the space to grow naturally, tweezing only stray hairs when necessary.
Switch to Satin Pillowcases
If you’re a side or stomach sleeper, friction against your pillow can tug on brow hairs and contribute to premature shedding. Switching to a satin pillowcase creates a gentler surface while you sleep, helping minimize friction on your hair, lashes, brows and skin.
Cleanse Thoroughly
Use a gentle facial cleanser to remove dirt, oil and makeup from your brows every morning and evening. This helps prevent clogged hair follicles, which can impede brow growth and cause irritation.
Apply Your BROW Serum Day and Night
Using your clinically proven BROW Serum every morning after washing your face and every night before bed will support your brow follicles and help decrease visible shedding for fuller looking brows.
Your BROW Results at Week 2
Twice daily application is key to real results. Made with proprietary Elastaplex® Technology, it takes time and consistency for the NULASTIN® BROW Shape Altering Serum to work.
Now is the time to start paying closer attention to your brows. As you continue with your NULASTIN routine, you may begin to notice early signs of visibly improved brow health, like the appearance of deeper color and less visible shedding.
The best transformations are worth documenting. Take photos as you move through each week so you can see the subtle changes add up over time. We love sharing real NULASTIN results, and yours could be the next story we feature.
Real Customer Stories: From Sparse to Stunning in 12 Weeks
Meet Jill
After 12 weeks of using NULASTIN®, Jill's reaction says it all. Her brows looked more like the full, defined brows she remembered from her younger years.
“They’re beginning to look like my eyebrows when I was younger!...I had tried so many serums before, and they did not work. And here's NULASTIN, and it surprised me!”
Stay consistent with your application for transformative results of your own - we can't wait to hear your comeback story.
Your BROW Results at Week 3
Have you been documenting your progress? You’re already about a quarter of the way to full results, and this is when those subtle changes may start becoming easier to spot. Compare your photos. Can you see a difference yet?
As your brows begin to look fuller, consider adding a brow gel to your routine to keep them perfectly in place and to show off your progress.
Insights from Our Experts
A note from Dr. Felipe Jimenez, our Science Advisor:
“Unlike other hair solutions, NULASTIN® harnesses elastin in a unique blend of active ingredients to fortify hair follicles, keeping the hair anchored in place while supporting the body's natural growth cycle. The process involves combining ethically sourced DNA proteins with key biological ingredients to support healthy hair follicle performance and promote fuller eyebrows.”
Just like the hair on your head, your brows follow a natural growth cycle:
Phase 1 - Anagen Phase (Active Growth) - For about 30-45 days, your brows are growing a bit every single day.
Phase 2 - Catagen Phase (Transition) - This is a brief 2-3 weeks when your hair follicles shrink and detach from the hair shaft.
Phase 3 - Telogen Phase (Resting) - Over approximately 2-4 months, your follicles rest in a dormant state.
Phase 4 - Late Telogen Phase (Reassembly) - For 1-2 weeks, hair naturally sheds as new follicles are formed and prepared for Phase 1.
Stay the Course
Because every brow is at a different point in its natural growth cycle, some may see visible results sooner than others. The key is consistency. Apply twice daily and give your brows the time they need. We’re confident you’ll love your results, or your money back.
Your BROW Results at Week 4
In a 12-week clinical trial, 97% of participants saw visible improvement in eyebrow thickness and size with our BROW Shape Altering Serum. Your consistency is starting to pay off, and with the 6-week milestone just two weeks away, visible results may be closer than you think.
Real Responsibility
We believe what you put on your hair and skin matters just as much as what you put in your body. That’s why we hold every NULASTIN® formula to rigorous standards, going beyond what’s required with extensive testing and carefully selected, high performance ingredients designed to deliver visible results.
Clinical Results At a Glance
Participants in our clinical study used the BROW serum twice a day, in the morning and at night. Here are the real results.
BROW THICKNESS - Participants noticed up to 60% thicker looking brows.
BROW FULLNESS - 97% of participants noticed their brows appeared fuller.
3X RESULTS - Our BROW Shape Altering Serum is clinically proven to deliver visible results at 6 weeks, with triple the wow at 12 weeks and beyond.
Your BROW Results at Week 5
Good news: you’re just one week away from your first major milestone. Around the 6-week mark, your results may start becoming more noticeable. Now is the perfect time to revisit your before photos and take a few new progress shots to see how far you’ve come. And remember, your results can continue to build week after week. Stay consistent. The best is yet to come.
Tips for a Full, Natural Looking Brow
Full, natural looking brows never go out of style. By now, you’re well on your way to achieving your own fuller looking brows. As your results continue to build, a few simple habits can help you keep your brows looking their best:
Let Them Grow
This may sound obvious, but the first step to fuller looking brows is letting them grow out. Resist the urge to overpluck or wax. If you have sparse areas, stick with your BROW Serum routine.
Regular Trimming
Instead of thinning out your brows by overplucking, focus on trimming longer hairs. Comb the brows upwards and snip only the very long hairs that extend above or below your brow line.
Avoid Over Processing
Overtinting, tattooing, microblading, or laminating can put stress on the brows, inhibiting future growth and even interrupting their current growth cycle.
Brush Daily
Brushing your brows upward daily with a spoolie brush helps promote circulation and also helps maintain their shape. Top freshly brushed brows with a clear gel for a clean look.
Healthy Diet
A well balanced diet rich in vitamins and minerals can improve hair health overall. Foods rich in B-vitamins, omega-3 fatty acids and proteins are particularly beneficial.
Use Gentle Products
When removing makeup or cleaning your face, be gentle on your brows. Use a mild cleanser and avoid harsh rubbing.
Remember, everyone's brows are unique, and what works for one person might not work for another. It's essential to find a brow routine and look that suits you and makes you feel confident.
Your BROW Results at Week 6
Congratulations, you’ve reached your first major milestone in your BROW journey.
By now, you may be noticing less visible shedding and brows that appear fuller and more defined. But you’re not finished yet. Stay consistent for another 6 weeks and your results could be up to 3X more dramatic. Your brow pencil may soon start feeling optional, too.
Six weeks is your first proof point, but your results can continue building week by week. In our 12-week clinical trial, participants who continued applying BROW Shape Altering Serum twice daily for another 6 weeks saw results triple compared to the first 6 weeks. By week 12, 60% reported thicker looking brows and 97% reported fuller looking brows overall. Week 12 is when you'll notice a full, natural brow shape rather than a subtle improvement.
Frequently Asked Questions
When will I see results?
It varies from person to person, but based on our clinical trial results, our BROW Shape Altering Serum is proven to promote fuller looking brows in as soon as 6 weeks, with triple the wow at 12 weeks and beyond.
How do I use NULASTIN® BROW Shape Altering Serum?
Apply AM & PM:
- Start with clean, dry eyebrows.
- Use the applicator brush to stroke the serum onto the eyebrows (or sideburns, beards, or goatees) using a short, vigorous motion directly on the hair follicle and/or the skin where hair growth is desired.
Tips for use:
- When starting a new tube, gently shake the container prior to opening.
- The serum can be applied under makeup with little to no wait time.
- We don't recommend using it after a brow pencil or gel, as this will dirty the applicator.
- The BROW serum has a clear consistency. Gently shake the tube prior to use. Pull the applicator straight out (not at a diagonal). Pumping the wand will not increase the amount of serum on the brush. Note, the brow brush is made of vegan material and product will not goop. This is by design. The custom tube is filled to capacity for 4-5 weeks of use, twice daily.
What are the active ingredients in the HAIR, LASH and BROW Serums?
There are 5 active ingredients in the LASH and BROW Formulas. These actives work synergistically to support elastin replenishment for healthy looking brows.
Biodesigned Signal Peptide [Myristoyl Pentapeptide-17]
A biomimetic, five amino acid peptide that supports active melanocytes & keratinocytes to strengthen lashes, enhance eyelash and eyebrow color and increase visible 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 hair follicles - minimizing visible fallout and maximizing visible density and volume.
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 in BROW Shape Altering Serum that collaborates with natural growth factors to support anagen (growth) and catagen (transition) phases to promote visibly thicker, fuller looking brows.
Biodesigned Isopropyl Cloprostenate
A biomimetic, analog of prostaglandin included at a specific concentration to safely and effectively support the natural growth cycle for visibly enhanced eyebrows.
Can you explain your 100% Performance Guarantee?
Every NULASTIN® product and order is backed by our 100% Performance Guarantee. If our product(s) did not perform up to your expectations, you can exchange or return them at any time for a full refund (Terms and Conditions Apply).
Can I use my BROW serum under makeup?
Yes! All our products are designed for ease of use and can be applied under makeup with little or no wait time. For best results, apply twice daily to clean, dry skin.
Why is elastin important? What's the urgency?
As we age, our body's ability to produce structural proteins like elastin decreases. In fact, by the time we reach early adulthood, the amount of elastin in our body is intended to last a lifetime. However, several factors, including stress, sun exposure, tobacco use, weight changes, harsh environmental conditions and aging can accelerate the loss of elastin.
As hormonal changes take place, the body faces elastin loss, which leads to effects like thinning hair and an inability to regenerate certain tissues.
By supporting the body's natural ability to stimulate the replenishment of elastin, we can delay the look of aging and hair loss to help customers look and feel their best at any age.
Do I have to keep using the product forever?
Using NULASTIN® consistently provides a continuous opportunity to improve your brows. The good news is that you can decrease usage after you've achieved your desired look. If you discontinue use altogether, your brows will gradually revert back to their original appearance.
You can apply the serum twice daily (morning and night) until you reach a point of satisfaction. Then, you can choose to decrease application to once per day, three or four times per week. When you want to increase your results again, simply go back to using twice per day.
What if I miss a few days?
Consistency is the key to lasting results, but no worries if things come up. If you 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 and/or duplicate applications for the LASH, BROW, or HAIR products.
Are NULASTIN products natural, ethical and safe?
Yes, NULASTIN® uses naturally derived, ethically sourced ingredients. All formulas are cruelty free, paraben free, gluten free, vegan friendly, clinically evaluated and proven safe.
How is this BROW Serum different from other products on the market?
NULASTIN® is the only product used in the cosmetics industry that contains proprietary Elastaplex® Technology featuring a cruelty free elastin protein that supports the body's ability to anchor the hair follicle “bulb” to the elastin root system, delivering longer, stronger looking hair, lashes and brows. Our formula has synergistic, active ingredients that target all phases of the hair growth cycle.
No other formula has our blend of Hepatocyte Growth Factor (HGF), opens in a new tab with vegan elastin and keratin proteins that are naturally derived and identical to the corresponding human DNA proteins. Keratins can range in quality and can differ from where they are sourced. Some keratins are made from plants and some from animal by-products. Common animal by-products used by the cosmetic industry are bovine blood plasma, tendons and ligaments from harvested animals. Our unique, cruelty free proteins are one of the biggest breakthroughs you'll find in our formula compared to other brands.
Is there a trick to make the product last longer?
Don't double dip and over pump. All NULASTIN® formulas are maximized for potency at the recommended dose.
Once you pull the applicator out, you will not need to redip. Each unique brush holds an adequate amount of formula for both brows.
Is NULASTIN's BROW serum safe for daily use?
Yes. It's designed for twice daily use (morning & night). The formula is cruelty free and free of common irritants such as parabens, sulfates and synthetic dyes. As with all eye area products, don't get it in the eyes and stop if irritation occurs.
Can I use BROW serum if I have sensitive skin?
For those who have a tendency to be sensitive, it is advisable to do a patch test prior to the first full application. The formula also doesn't contain any of the common preservatives that can cause allergies (such as lanolin or MCI/MI), which makes NULASTIN® a good choice for those with sensitive skin, though it may be different for every skin type.
The Bottom Line
Fuller looking brows don’t happen overnight. Like all hair, they follow a natural growth cycle. Weeks 1–3 are about supporting the elastin root system surrounding each follicle. Around weeks 4-6, visible shedding should begin to slow and brows will start to look fuller. By week 12, those subtle changes will build into fuller looking, more naturally defined brows.
So start today. Take the photo. Stay consistent. 6 to 12 weeks from now, you may be very glad you did.