Allure Best of Beauty 2024 Winner

AHA+ACV Pre-Shampoo Rinse

BioBrew™ Fermented Strengthening Serum

$34

Size

55 ml

1

Our lightweight leave-in for both hair and scalp. For hair, this serum spray is clinically shown to control frizz, boost shine, protect from heat, and repair damage for up to 3x stronger hair in just one use.* For scalp, this serum is microbiome-friendly, derm-tested and restores balance and hydration.

Real Simple Smart Beauty Award Winner 2024: Best Scalp Treatment 

    • Promotes up to 3x less hair breakage* in just one use

    • Protects hair from heat up to 450ºF / 232ºC

    • Controls frizz for up to 72 Hours**

    *Based on dry combing on bleached hair tresses.

    **When used in 80% relative humidity

  • The key step in your healthy hair ritual, this do-it-all bi-phase serum spray blends the nourishment of an oil with the lightweight treatment power of a serum for dramatically stronger, healthier hair.

3X STRONGER HAIR IN JUST ONE USE

3X STRONGER HAIR IN JUST ONE USE

3X STRONGER HAIR IN JUST ONE USE

3X STRONGER HAIR IN JUST ONE USE

3X STRONGER HAIR IN JUST ONE USE

Biobrew Iris before and after image
Biobrew Jordyn Before and After

VISIBLY STRONGER, HEALTHIER HAIR OVER TIME

Unretouched photos, individual results will vary.

  • Minimizes hair fall due to breakage by 3400 strands on average*

  • 94% had improvement in scalp moisturization**

  • 94% had visibly improved texture***

  • 92% had visibly improved shine***

Results after one use of Strengthen Concentrated Shampoo + Conditioner and BioBrew Fermented Strengthening Serum. Blow dried with a diffuser.

*Based on dry combing analysis on bleached hair tresses

**Based on instrumentation testing on 39 subjects after 4 weeks of use

***Based on expert clinical grading evaluation on 39 subjects after 4 weeks of use

How to use:

Shake well.

Spray on damp, towel-dried hair 2-3 inches from scalp to ends.

Average application is 3 pumps to the scalp and 3-5 pumps to the lengths of hair, depending on hair texture, density and length, Use 2-3x/week.

Massage scalp gently and comb through. Do not rinse.

Style as usual.

    • Rootbiomic Ferment™ - Designed for the ultimate wellness of roots, scalp, and hair, our multivitamin superfood is rich in clinically effective proteins, roots, and mushrooms that are transformed through fermentation into biologically compatible micronutrients that promote active, anchored roots, balanced, hydrated scalp and visibly stronger, healthier hair.

    • Bio-Peptides - Rich in collagen, keratin, and proteins to help strengthen hair from root to tip.

    • Vitamin C (Tetrahexyldecycl Ascorbate) - Visibly repairs the hair cuticle to improve vibrancy and shine.

    • Rootbiomic Ferment™

    • Bio-Peptides

    • Vitamin C

    • Parabens 

    • Phthalates

    • Mineral Oil

    • Sulfate SLS+SLEC

    • Silicones

FAQs

multiple packages of biobrew dispalyed

Worth Rooting For

Biobrew is a must-have serum that’s a hardworking hair hero. Think instant frizz control, supreme shine and heat protection for the ultimate wellness ritual for roots, scalp and hair.

Pair it with

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Reviews

Based on 129 reviews
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Review Image - BioBrew™ Fermented Strengthening Serum
Barb B
Review Image - BioBrew™ Fermented Strengthening Serum
Louise S
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Kimber k
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Jensen A
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Eva L
Smells great, very light texture...
Smells great, very light texture and noticed an immediate improvement in shine—all frizz was also eliminated almost immediately! Will definitely purchase again, 5/5 recommend!
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7 months ago
Verified Customer
Molly T
I recommend this product
Hair Type:
Thin
Keeps my hair really smooth...
Keeps my hair really smooth and detangled
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10 months ago
Zainab
A sulfate-free shampoo and silicone-free...
A sulfate-free shampoo and silicone-free conditioner duo that instantly boost volume + thickens strands while promoting fuller-looking hair over time. Ultra-concentrated so you only need half your usual amount.
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11 months ago
Verified Customer
Christina N
I recommend this product
Hair Type:
Thin
Honestly — BioBrew really does...
Honestly — BioBrew really does work. My color processed hair has been through breakage, and combining this with biotin has strengthened my hair. Even products from bigger brands didn't restore my hair to its original strength. What prevents the perfect 5 is how quickly you can burn through this. It can last up to one month if I'm lucky.
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11 months ago
Verified Customer
Kristina P
Little River, United States
I recommend this product
Hair Type:
Straight
I love this serum so...
I love this serum so much! Even after just one use I saw and felt a visible difference in my hair. This helps with my frizz and makes my hair look healthier. I love this product so much!
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1 year ago
Verified Customer
Genevieve C
I recommend this product
Hair Type:
Straight
Wonderful truly wonderful ...
Wonderful truly wonderful
1 person found this review helpful.
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1 year ago
Natalie C
I ordered the serum when...
I ordered the serum when I saw it helps decrease hair shedding. All I musts say; my hair loves it, Drastic amount of decrease in hair shed, hair feels thicker and ends are not dry. Will be a forever staple 🙌🏼
1 person found this review helpful.
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1 year ago
Catalina
I love this ! Nothing...
I love this ! Nothing I’ve used before. I used it with the shampoo and conditioner, and wow ! It’s like just those 3 products help with frizz and gives me shine !
1 person found this review helpful.
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1 year ago
Verified Customer
Byrd M
I just got my package...
I just got my package a few days ago and I must say that I have been spraying it on my hair in between applying my wigs on my head and so far it has been soothing. Can’t wait to see the results and the hair strength and growth🍃
1 person found this review helpful.
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1 year ago
Verified Customer
GIGI L
Hair Type:
Straight
Tried out the Rootist for...
Tried out the Rootist for a week now and I love how it feels. The biggest notice is my scalp feels like dry. And in between washes my hair gets less oily as well. Will definitely be keeping it in my daily routine from now on!
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1 year ago
Verified Customer
Terri S
Hair Type:
Coily
Amazing - - my hair...
Amazing - - my hair has never felt better - - after just one use!!! Unbelievable. I am now a very loyal customer. Can't wait to try more products.
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1 year ago
Verified Customer
Elena K
Los Angeles, United States
Hair Type:
Thin
I have thin hair, and...
I have thin hair, and when I use the Rootist it feels nourished and hydrated but not overly oily. I love how it smells too, very refreshing and clean!
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1 year ago
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