Boost & Build Duo

Name: Boost & Build Duo
Brand: Growth Bomb US
Price: 23.99 USD
Availability: InStock
Rating: 4.8 (189 reviews)

4.8

Rated 4.8 out of 5 stars

189 Reviews

$23.99

$29.99

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The Boost & Build Duo pairs our Derma Roller with the Booster Serum Strength & Length — so every drop of peptide-powered serum goes exactly where it needs to go.

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More Info

Actives are only as good as their delivery. You can apply the best serum in the world to a surface that isn't ready to receive it — and most of it stays on top of the skin, never reaching the follicle where it's needed.

By creating thousands of micro-channels across the scalp, the derma roller dramatically increases the absorption of the Booster Serum — so Capixyl™ and Yerba Maté caffeine can get deeper, faster, and work the way they're designed to. More penetration means more peptides reaching the follicle. More peptides means a stronger growth signal.

How to use

Step 1 — Roll
On a clean, dry scalp, use the Derma Roller to make slow passes across the scalp in horizontal, vertical, and diagonal directions. Apply light, consistent pressure. Focus on areas of thinning or where you want to encourage growth. This takes about 3–5 minutes.

Step 2 — Apply
Immediately after rolling, section the hair and apply the Booster Serum Strength & Length directly to the scalp. The micro-channels created by rolling mean the serum absorbs faster and penetrates deeper than when used alone. Do not rinse.

How often?
2–3 times per week. Always apply the serum immediately after rolling while the channels are open. Avoid rolling on an irritated or sunburned scalp.

Boost & Build Duo

real customer results

Everything in our formulas is at an active level, scientifically proven to boost your hair.

4.8

Rated 4.8 out of 5 stars

Based on 189 reviews

Total 5 star reviews: 172 Total 4 star reviews: 8 Total 3 star reviews: 5 Total 2 star reviews: 2 Total 1 star reviews: 2

95%would recommend these products

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189 reviews

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R
RB
Verified Reviewer
Reviewing
Booster Serum Strength & Length
I recommend this product
What texture is your hair? Thin
What are your hair/scalp concerns? fine & flat hair
How old are you? 25-34
Rated 5 out of 5 stars
20 hours ago
A Miracle in a Dropper Bottle for Fine, Oily Hair
I have fine hair and an oily scalp, and NOTHING has worked for me like this serum. First use and my hair was softer, shinier, less greasy, and somehow had MORE volume at the roots instead of less. It genuinely feels like skincare for the scalp, not just another hair product.
What shocked me most is that it’s literally replacing dry shampoo for me, which I NEVER expected. My roots stay fresher, lighter, and more balanced without feeling coated or heavy. This serum is a miracle in a dropper bottle.
I’m never stopping this product. Please NEVER discontinue it.
Also… why is nobody talking about this???
Was this helpful?
J
Jane
Verified Reviewer
Reviewing
Booster Serum Strength & Length
I recommend this product
What texture is your hair? Thin
What are your hair/scalp concerns? thinning & hair loss
How old are you? 35-44
Rated 5 out of 5 stars
3 months ago
Genuinely impressed with the new hair growth!
This patch on my scalp used to be super sparse and thinning, and now it’s so full. My hair also feels so much softer and healthier. I got my mum to try it too for her thinning hair, and she loves it. So worth it!
Was this helpful?
SS
Sarah S.
Verified Buyer
Reviewing
Booster Serum Strength & Length
I recommend this product
What texture is your hair? Wavy
What are your hair/scalp concerns? thinning & hair loss, breakage-prone hair, fine & flat hair
How old are you? 18-24
Rated 5 out of 5 stars
5 months ago
Booster serum
Has made my hair overall more hydrated and I have more volume making my hair feel thicker and fuller
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YP
Yessenia P.
Verified Buyer
Reviewing
Booster Serum Strength & Length
I recommend this product
Rated 5 out of 5 stars
1 year ago
5 Stars
Excellent, my hair is recovering quickly and healthily.
Translated from Spanish
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L
Lauren
Reviewing
Booster Serum Strength & Length
I recommend this product
What texture is your hair? Wavy
What are your hair/scalp concerns? breakage-prone hair
How old are you? 18-24
Rated 5 out of 5 stars
2 days ago
Booster Serum Review
Have been using this hair growth serum for a few weeks and have seen so much more hair growth! Love this product.
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key active ingredients

We blend proven botanicals with clever science to wake up your scalp, energise your roots, and get your hair back to its bold, bouncy best.

Yerba Maté

Antioxidant-rich Yerba Maté extract is packed with caffeine energy. This helps protect hair from oxidative damage and supports healthy roots for optimal condition and strength.

Capixyl™

A patented biomimetic peptide combined with red clover flower extract that is rich in biochanin A. It’s an innovative and powerful cosmetic ingredient providing fuller, thicker and healthier looking hair.

White Cypress

A volume-boosting extract that helps improve the appearance of hair diameter. It's an excellent hydrator that supports anti-breakage by slowing down hair fall due to weak hair.