Our story · Since 2017

Seven years. 34 formulas. One system we'd actually use.

No finasteride. No minoxidil. No hidden blends. Three growth actives with real human trials behind them, at full clinical strength, delivered through 0.5 mm micro-infusion past the barrier that stopped everything else you tried. And if it doesn't regrow your hair in 120 days, you don't pay.

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American BioLabs micro-infusion stamp being applied to the scalp

The Hair Regrowth System

Seven years in development
Trial-strength doses, disclosed
Every study linked on PubMed
120-day money-back guarantee

If you only read one thing

Built for the man who's tried everything. Foam, pills, shampoos, and companies that kept the money whether they worked or not.
Most of what you rub on your scalp never reaches the follicle. It's not a willpower problem. It's a delivery problem, and that's what we spent seven years solving.
Procyanidin B2 1% · Adenosine 0.75% · Caffeine 0.2%. The exact strengths used in published human trials. Read every one yourself, below.
Regrow your hair in 120 days, or don't pay. Every dollar back, and you keep the kit.

How it started

It started with one question nobody could answer.

Minoxidil foam. Finasteride. Thickening shampoos. Gummies. Most men who find us have tried at least one, and when it didn't work, most were told the same word: genetic.

In 2017 we put the most popular hair-loss products side by side and asked the question none of their labels answered: how is any of this supposed to reach the follicle?

Your scalp has a barrier, and it does its job a little too well. Foams, serums and shampoos sit on the surface, where most of the active never reaches the follicle that actually grows the hair. The ingredients weren't the whole problem. They just never arrived.

And every one of those companies kept the money anyway. Not one of them had to answer for the result.

So we stopped asking “what's the best ingredient?” and started asking “what's the best ingredient that actually gets there?”

That question took seven years to answer properly. We went through more than 200 published hair studies and kept only the actives with human trials behind them. Then we put each one in at the exact concentration the trial used. No trace dosing. No hidden blends. The serum went through 34 versions before one stayed stable at full strength and still felt like nothing on the scalp.

The stamp was its own fight. The first heads went too deep and nobody wanted to use them twice. The next ones were so shallow they did nothing. It took until 2022 to lock a fixed 0.5 mm head: deep enough to get the serum past the barrier, shallow enough that it feels like tapping a fingernail on your skin. Five minutes, once a week.

Before we sold a single kit, 142 men used the system for 16 weeks each in 2023 and 2024, and told us what worked and what didn't. That was real-world testing, not a clinical trial. We haven't run our own clinical study yet, and we won't pretend otherwise. The evidence we point to is the published research on each active, linked further down this page.

We launched in 2025. Seven years from the first question to the first box.

2017 One question: how is any of this supposed to get in? American BioLabs starts.
2018 200+ studies read, narrowed to the actives with real human trials.
2019 First micro-infusion prototypes: too deep, then too shallow.
2020–21 Serum versions 1 to 34, until full clinical strength stayed stable in the vial.
2022 The fixed 0.5 mm head is locked.
2023–24 142 men use the system for 16 weeks each before launch.
2025 Launch, with the 120-day money-back guarantee.

The one idea behind everything we make

The problem was never your hair.
It was the delivery.

That's why we built a system, not another bottle. The stamp opens the way. The serum goes through it.

Clear the Path

0.5 mm micro-channels open the scalp barrier, clearing buildup and boosting blood flow to oxygen-starved follicles.

Activate the Root

The serum reaches the follicle, where procyanidin B2 and adenosine signal dormant roots back into the active growth phase.

Anchor the Strand

The hair shaft thickens, the root strengthens, and daily shedding drops.

How to tell we're not another scam

Six things we refuse to do.

If you've been burned before, you already know the tricks. Here's every one of them, and what we do instead.

We don't do: Trace dosing

Full clinical strength

1% · 0.75% · 0.2%, the exact doses the trials used. Not a pinch so it can go on the box.

We don't do: Hidden blends

Every dose, disclosed

The concentration of each studied active is published on our product page. Many brands never disclose a dose at all.

We don't do: Hormonal trade-offs

Drug-free · non-hormonal

No finasteride. No minoxidil. No daily drug or hormonal trade-off.

We don't do: Unproven claims

Every study on PubMed

Linked, with the trial size and its limitations. Read it yourself.

We don't do: Subscription traps

Skip, pause or cancel anytime

Online, from your account. No phone call, no fees.

We don't do: Fine-print guarantees

120 days or every dollar back

No visible change? We refund every dollar, and you keep the kit. The full terms fit on one page.

The studied formula. At full strength.

Don't take our word for it. Take theirs.

Most brands say “clinically proven” and hope you won't ask where. We give you the trial, the dose it used, what it found, and what's weak about it.

Procyanidin B2

1%

The trialKamimura 2000 · Phytomedicine · 29 men · 6 months · double-blind, placebo-controlled

What it found+6.68 hairs per 0.25 cm² on 1% procyanidin B2 vs +0.08 on placebo.

LimitationSmall cohort (19 active / 10 placebo). Supported by Takahashi 2001.

Read it yourself on PubMed

Adenosine

0.75%

The trialWatanabe 2015 · Int J Cosmet Sci · 102 men · 6 months · double-blind, randomized

What it found80% reported at least fairly marked improvement vs 32% on the control lotion.

LimitationComparator was a control lotion. Replicated placebo-controlled in Iwabuchi 2016.

Read it yourself on PubMed

Caffeine

0.2%

The trialDhurat 2017 · Skin Pharmacol Physiol · 210 men · 6 months · randomized, multicenter

What it foundNon-inferior to 5% minoxidil: +10.59% vs +11.68% change in anagen hair ratio.

LimitationOpen-label design: no blinding, no placebo arm.

Read it yourself on PubMed

These are published trials of the individual actives, at the concentrations we use. They are not trials of the American BioLabs system, and we have not completed our own clinical study.

Honest fit

Who this is for. And who it isn't.

We'd rather lose a sale than sell you something that can't work for you.

It's built for you if…

You're thinning at the crown, temples or hairline, or all over
You've tried minoxidil or finasteride and want zero hormonal trade-offs
You can give it five minutes, once a week, for 120 days
You want to judge it by your own photos, not our promises

It's not for you if…

You've been completely smooth for many years. If the follicles are gone, nothing you put on your scalp brings them back, and we won't pretend otherwise.
Your hair is falling out suddenly or in patches. That's a different problem, and this isn't built for it. See a doctor first.
You want a result in two weeks. This takes months, and we'll tell you that up front.

One last thing.

If you've been burned before, you're exactly who we built this for. The foam, the pill, the “it's genetic” shrug, the products that kept your money either way. That's why we spent seven years on this before we sold a single kit.

We can't promise it'll work for every man alive. Nobody honest can. What we can promise is that you'll know in 120 days, and if it doesn't work for you, you get every dollar back. Try it with nothing to lose.

And if you ever want to tell us how it's going, good or bad, write to us. A person reads every email.

The American BioLabs teaminfo@american-biolabs.com

Seven years. 34 formulas. One system we'd actually use.

If you only read one thing

It started with one question nobody could answer.