• Castéa (Castea) Roll-On Hair Growth Serum bottle for thinning hair
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4.8/5 (2436 Reviews)

Castéa Hair Growth Serum

Castéa Hair Growth Serum

🏆 Voted #1 Best Hair Growth Product

  • Nourishes and strengthens hair follicles
  • Visibly fills in sparse and thin patches in weeks
  • Targets DHT, the hormone that weakens follicles
Michael L.
I saw that my eyebrows started looking thicker after using Castéa for 2 months!
Michael L.
★★★★★
Portland, Or...
ellie kim
my thin brows started filling in after using castéa. my friends kept asking what im using.
ellie kim
★★★★★
New York City
Erica
I can't recommend castea enough!! Bought 4 to share with my friends.
Erica
★★★★★
Miami, Florida

Estimated Delivery: 7-14 days. Free shipping on all orders!

Roll On Hair Growth Serum — See fuller hair in 4 weeks. Original Hair Serum roll on. Simple AM/PM use, mess-free and travel-friendly.

Rosemary Oil: Boosts circulation to awaken dormant hair follicles and naturally stimulate regrowth.

Redensyl: A breakthrough ingredient shown to reactivate stem cells in hair follicles for visibly thicker, denser hair.

Anagain: Helps to extend the hair's growth phase and reduce shedding.

Aminexil: Prevents follicle hardening, keeping roots anchored and reducing thinning over time.

We offer Free Shipping on all orders storewide! Please allow 1-2 business days for us to process and ship your order. Estimated arrival time: 7–14 business days.

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Join 10,000+ Happy Customers

Why choose Castéa

Ditch slow results and harsh formulas.
Castéa brings you fast-acting, natural ingredients with a lightweight, non-greasy texture. See visible hair growth in just weeks — trusted by customers worldwide.

Castéa Others
Visible results in 4 weeks
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Non-greasy formula
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Natural ingredients
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Trusted by men and women
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No irration
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Pleasant natural fragrance
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Our results prove why customers keep coming back

Goodbye to Sparse Brows

Customers reported their sparse and thin brows filling in within weeks

96%

Improved Eyebrow Growth

Many experienced fuller and thicker eyebrows after a few weeks

93%

Healthier and Thicker Hairline

Several mentioned their hairline was coming back and healthier than before

90%

Reduced Patchiness

Users reported seeing good facial hair growth after using

87%
Nature's Best Ingredients
Satisfaction Guaranteed
Effortless Self-Care
Pure Wellness Delivered
Nature's Best Ingredients
Satisfaction Guaranteed
Effortless Self-Care
Pure Wellness Delivered
Nature's Best Ingredients
Satisfaction Guaranteed
Effortless Self-Care
Pure Wellness Delivered
Nature's Best Ingredients
Satisfaction Guaranteed
Effortless Self-Care
Pure Wellness Delivered
Nature's Best Ingredients
Satisfaction Guaranteed
Effortless Self-Care
Pure Wellness Delivered
Nature's Best Ingredients
Satisfaction Guaranteed
Effortless Self-Care
Pure Wellness Delivered

Hear From Our Customers!

4.8 / 5
overplucked brows
I seriously thought my brows were ruined forever after overplucking. The tails never grew back, no matter what oil or serum I tried. 2 months with Castéa and I started seeing noticeable difference and hairs filling in the gaps. It’s the first time in years my brows look full without makeup.
Cassie H.
Confidence in brows
My brows were always a bit patchy, especially at the ends. After using this serum for a few weeks, they’ve filled in and look way more even. Makes a huge difference to my face.
Frank J.
growth transformation
I had these annoying bald patches in my brows that always showed up in photos. Filling them in took forever and never looked natural. After a month of using the roll-on, the spots are filling in and I actually feel confident leaving the house without pencil.
Alyssa
Hairline regrowth
I could see my temples thinning fast, and it made me insecure. This serum has slowed the loss and I can already see little sprouts coming in.
Jake L.
Before and After Results
I’ve wasted money on products that promise growth but deliver nothing. With this, I took before-and-after photos and couldn’t believe the difference in just 8 weeks — my crown looks fuller and my scalp feels healthier. A quick roll twice a day gave me results that hours of treatments never did.
madison lewis
Patchy Beard Fix
I’ve always had patchy spots on my beard that just wouldn’t fill in. I started rolling this serum onto those areas every night, and after a few weeks I noticed new hairs coming in. It’s the first time my beard actually looks even.
Thomas Reed
Nature's Best Ingredients
Satisfaction Guaranteed
Effortless Self-Care
Pure Wellness Delivered
Nature's Best Ingredients
Satisfaction Guaranteed
Effortless Self-Care
Pure Wellness Delivered
Nature's Best Ingredients
Satisfaction Guaranteed
Effortless Self-Care
Pure Wellness Delivered
Nature's Best Ingredients
Satisfaction Guaranteed
Effortless Self-Care
Pure Wellness Delivered
Nature's Best Ingredients
Satisfaction Guaranteed
Effortless Self-Care
Pure Wellness Delivered
Nature's Best Ingredients
Satisfaction Guaranteed
Effortless Self-Care
Pure Wellness Delivered

Our 30-Day Money Back Guarantee

We’re confident you’ll love the difference our roll-on serum makes — but if you don’t, you don’t risk a thing. Try it for 30 days, and if you’re not happy with the results, simply reach out to us for a full refund. No hassle. Your hair — and your confidence — are worth it.

 
 

Castéa Hair Growth Serum - FAQs

It is a dermatologically tested formula enriched with Redensyl, Procapil, and Biotin, designed to reduce hair fall and promote thicker, stronger hair growth.

Most users notice visible results within 6-12 weeks of consistent use, though results may vary depending on hair type and condition.

Apply 1-2 ml of serum directly where you wish to see hair growth, daily at night. Massage gently with fingertips and leave it overnight. Do not wash immediately after application.

Yes! The serum is suitable for all hair types, including chemically treated hair. It is free from harmful chemicals like parabens, sulfates, and mineral oils.

Definitely! Castéa Hair Growth Serum is formulated for both men and women experiencing hair thinning or hair fall.

The serum is dermatologically tested and safe to use. Rarely, some users may experience mild itching or irritation. If irritation persists, discontinue use and consult a dermatologist.