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4.7 Stars, 46 Reviews

BOOSTA PLUS+ Hair Serum

SOFTENING • REJUVINATING • FULLNESS

A lightweight leave-in serum that soothes the scalp and rejuvenates at the root for healthier and fuller-looking hair.

Pairs well with

WEEKENDER Shampoo
WEEKENDER Shampoo 8oz/236ml

RE:UNITE Treatment
RE:UNITE Treatment 4oz/118ml

More details

DESCRIPTION

This lightweight leave-in serum soothes the scalp for healthier hair. Formulated to nourish all hair types, especially thinning or lifeless locks, and deliver a fuller-looking appearance, plus softens and adds shines. Apply to damp or dry hair daily to rejuvenate at the root. Enriched with three high-quality patented ingredients Baicapil, Procapil, and Agreynist, plus Caffeine and Phyllanthus Embilica Fruit Extract.

Daily use for all hair types
No rinse formula
Soothes the scalp
Delivers fuller-looking hair
Softens and adds shine
Lightweight and non-greasy
Apply to damp or dry hair
Safe for color-treated hair
Vegan, cruelty-free, and paraben-free
Fragrance-free

DESCRIPTION

This lightweight leave-in serum soothes the scalp for healthier hair. Formulated to nourish all hair types, especially thinning or lifeless locks, and deliver a fuller-looking appearance, plus softens and adds shines. Apply to damp or dry hair daily to rejuvenate at the root. Enriched with three high-quality patented ingredients Baicapil, Procapil, and Agreynist, plus Caffeine and Phyllanthus Embilica Fruit Extract.

Daily use for all hair types
No rinse formula
Soothes the scalp
Delivers fuller-looking hair
Softens and adds shine
Lightweight and non-greasy
Apply to damp or dry hair
Safe for color-treated hair
Vegan, cruelty-free, and paraben-free
Fragrance-free

HOW TO USE

Fill the dropper and apply directly to the scalp, focusing on areas where you want healthier and fuller-looking hair, and massage serum into the scalp with your fingertips. Do not rinse. Apply once a day to damp or dry hair. Style as desired.

HOW TO USE

Fill the dropper and apply directly to the scalp, focusing on areas where you want healthier and fuller-looking hair, and massage serum into the scalp with your fingertips. Do not rinse. Apply once a day to damp or dry hair. Style as desired.

COMPARISON CHART

BOOSTA PLUS+ Hair Serum

BOOSTA PLUS+
Hair Serum

 		7SECONDS Masque

7SECONDS
Masque

 		RE:UNITE Treatment

RE:UNITE
Treatment

 		BLONDA Fix Treatment

BLONDA
Fix
Hair Type

For all hair types

For all hair types

For dry/damaged hair

Tone blonde, gray + highlighted hair
Usage

Daily use on damp or dry hair

Weekly use on damp hair

Weekly use on damp hair

Weekly use on damp hair
Benefits

Nourishes the scalp + delivers full-looking hair

Deeply hydrates, protects + strengthens

Deeply nourishes, hydrates + restores elasticity

Tones yellow/orange tones in 1 use
Heat + UV Protection

No

No

No

No
Scent

Fragrance free

Signature Fresh Scent

Lavender Citrus Scent

Fragrance free

Frequently Asked Questions

Do I apply this to damp or dry hair?

Massage a dropper full directly onto the scalp on clean, damp hair. Do not rinse.

What does BOOSTA PLUS+ Hair Serum do?

This lightweight serum helps promote the appearance of fuller, healthier-looking hair while improving softness, shine, and manageability.

Will it weigh my hair down?

Not at all! The lightweight formula absorbs quickly without leaving behind residue or heaviness.

Can I use it every day?

Yes! For best results, incorporate BOOSTA PLUS+ Hair Serum into your daily haircare routine.

Will this make my roots oily?

No. Apply primarily through the scalp and roots as directed—the lightweight serum absorbs quickly without leaving behind greasy residue.

How long does it take to see results?

Potential hair growth and density vary by individual, but consistent daily use is key. You'll also notice softer, healthier-looking hair immediately.

What are the ingredients?

Water/Aqua/Eau, Propanediol, Butylene Glycol, Boitinoyl Tripeptide-1, Arginine, Phyllanthus Embilica Fruit Extract, Scutellaria Baicalensis Root Extract, Apigenin, Ononis Spinosa Root Extract, Avena Strigosa Seed Extract, Glycine Soja (Soybean) Germ Extract, ,Triticum Vulgare (Wheat) Germ Extract Tetrasodium EDTA, PPG-26-Buteth-26, ,Decylene Glycol Caprylyl Glycol, Lactic Acid, Glycerin, PEG-40 Hydrogenated Castor Oil, Caffeine, Oleanolic Acid, Hydroxyethylcellulose, Phenoxyethanol, Sodium Nitrate, Sodium Phosphate, Disodium Phosphate, Polysorbate 60, Sodium Benzoate, Gluconolactone, Calcium Gluconate

Overall rating: 4.652174 / 5 from 46 reviews.

AI Generated Review Summary

Summary topics

Review topics: [volume, results, feeling, serum, bottle, hair, boost, use, scalp, residue, apply, extensions].

Review highlights

Reviews

Miracle worker

"Skeptical of this product, but have triednit for a little over 30 days. No residue when applied on dry scalp. Shedding has significantly decreased and my hairjust feels healthier!"

— Christy R. (5/5)

Boosta serum

"Honestly I don’t see much boost or volume. I’m still hoping, I’m giving it more time."

— Victoria G. (3/5)

Hair serum

"It’s a very good hair product!"

— Andrey N. (5/5)

For thinning hair

"Just started using for thinning hair, will update soon ."

— Renee R. (5/5)

My hair and scalp loves this

"I highly recommend this product if you are looking for a product to help your scalp and hair. Ever since I started using this product I noticed my scalp is heather and my hair is stronger. I highly recommend if you need a little boost in your hair."

— Brooke D. (5/5)

Awesome Volume

"This product gives my hair great volume, and I truly recommend it for those who are looking for volume and hairstyles"

— Virginia F. (5/5)

My hair loves it

"Love this serum to rub in at bedtime"

— Andreanne R. (5/5)

It works!

"It works! I lost hair from covid and I used this esp around my side temple hair line and I was able to see hair growth."

— Emily W. (5/5)

Boost-a-move

"This product from Unite is a genius. If you’re feeling that, your hair is dull lifeless and needs a little pick me up just a little goes a long way with this serum."

— Angela W. (4/5)

Hair Serum

"It really works!! Makes my hair grow and gives a thicker and fuller feeling and lok to my hair."

— Jenifer W. (5/5)

Q&A

What does every 2 month mean? I’ll get 1 bottle every 2 months?
Hi Anna, UNITE subscriptions are easy and flexible! If selecting a frequency of every 2 months, your auto ship order will process a new order every 2 months. You are able to select the frequency and quantity of products that work best for you!
Is this pregnancy safe?
Hello! Happy to share that UNITE products are safe to use during pregnancy. We pride ourselves on many of our products being vegan, paraben-free, sulfate-free, and sodium chloride free. However, if you should have any concerns regarding a specific product, we always recommend consulting with your physician first. All product ingredients are listed on our website for your convenience. We hope this helps!
Does this help with androgentic alopecia? (Female pattern hair loss)
Hi Marisa, BOOSTA Plus+ Hair Serum is specially formulated to support hair health, improve the appearance of one’s hair thickness, and decrease visible signs of shedding and breakage. It promotes a healthier scalp that can aid in revitalized hair growth. However, please note it is not specially intended to diagnose, treat, cure, or prevent any health issues or diseases. If there are any health concerns, we always recommend consulting with your physician first. We hope this helps!
How long does a bottle last?
Hi Jennifer, one bottle of BOOSTA PLUS+ Hair Serum will last about 4-8 weeks depending on usage - some may target specific areas, while others may use it all over.
What happens when you stop using it??
Hi Misia, thank you for your question! Regular use of BOOSTA Plus+ Hair Serum is recommended. If you stop using BOOSTA PLUS+ Hair Serum, you will miss out on the continued benefits of creating a healthy scalp to aid in hair growth and reduced shedding. We hope this helps!