TL;DR
Our No. 01 Peptide Serum ($65) and No. 02 Botanical Serum ($55) occupy the exact same morning slot, run on the same eight-to-twelve-week timeline, and make the same honest structure/function claims; the difference is ingredient philosophy. No. 01 leads with five synthetic biomimetic peptides; No. 02 leads with rosemary, ginger, and a marine-algae blend. There is no head-to-head trial declaring a winner. The choice is preference, scalp feel, and budget, not one serum being secretly better.
We write a lot of comparison articles pointing outward: rosemary versus minoxidil, saw palmetto versus finasteride. This one points at ourselves. We sell two daily serums, people ask us constantly which to buy, and the honest answer is not "the more expensive one." It is "it depends, and here is exactly on what." If you read to the end and conclude you should buy neither of them right now, we have done our job. Both serums are cosmetic scalp-care products; neither is a drug, and nothing below changes that.
What is actually the same between them?
More than the marketing might suggest. Both are leave-in morning serums for a clean, dry scalp, used once daily at four to six drops. Both are built around the same premise: the scalp is skin, consistency is the active ingredient, and the honest evaluation window is eight to twelve weeks with month four as the maximum-effect mark. Neither regrows hair.
This matters because the first instinct in any comparison is to look for the catch: the cheaper one must be weaker, the pricier one must be the "real" one. That framing does not fit here. Both serums make the same claims in the same register: they support the appearance of fuller-looking hair and help maintain a healthy-looking scalp. The timeline is set by the hair cycle, not the formula, which is why our guide to how long a peptide serum takes to work applies equally to the botanical. And the massage that comes with either application is doing real work: Koyama and colleagues, in a 2016 Eplasty study, documented measurable thickness change from standardized daily scalp massage over 24 weeks. The ritual is shared. The bottle is the variable.
What is actually different between them?
The philosophy of what goes in the bottle. Our peptide scalp serum leads with five synthetic biomimetic peptides (sh-Polypeptide-1, sh-Oligopeptide-10, sh-Polypeptide-11, sh-Oligopeptide-2, sh-Polypeptide-9) paired with arginine, saw palmetto, rosemary, and Scutellaria baicalensis. The idea is lab-engineered signaling molecules designed to sit on the scalp surface, with botanicals in support.
The plant-first botanical serum inverts that. Rosemary leaf extract leads, joined by a chlorella-and-spirulina marine blend, ginger, licorice, baicalin, and vitamins C and E. There are no synthetic peptides. Someone who wants a plant-forward formulation, or who simply prefers botanicals as a matter of principle, is the reader this one is for.
Two honest notes on the evidence behind each side. The peptide literature is real but preliminary, offering credible ingredient science and small studies, which our peptides explainer lays out without hype. The botanical side has its own supportive signals: rosemary showed a 5-alpha-reductase-inhibiting mechanism in the preclinical work of Murata and colleagues (2013), and saw palmetto, shared into No. 01, carries the small, consistent human signal that Rossi and colleagues documented in 2012. Neither body of evidence is drug-grade. Both are the right size for a cosmetic claim.
Neither is finasteride. Here is what that changes.
The honest limitation applies to both bottles equally: neither serum is finasteride, neither will lower your DHT, and neither will do what a drug does. No head-to-head trial has ever compared these two products against each other, and no trial has compared either against a prescription. What that means practically is that the "which is better" question has no evidence-based answer, because the difference between them, if any exists, is almost certainly smaller than the difference either one makes versus doing nothing consistently. You are choosing between two reasonable cosmetic routes to the same modest, honest goal. You are not choosing between a strong option and a weak one, and you are not choosing a substitute for medical treatment. If your loss is driven by DHT and moving quickly, the relevant comparison is not peptide-versus-botanical; it is our map of what works without minoxidil, which places both serums in the cosmetic tier, below the drug tier in effect size.
How to actually decide
Four practical questions sort most people cleanly:
Do you want synthetic or plant-first? This is the real fork. If biomimetic peptides appeal to you and you want the ingredient class with the most cosmetic-science attention, No. 01. If you prefer a botanical-led formula on principle, No. 02. Neither preference is more scientific than the other.
How does your scalp feel? Both are lightweight leave-ins, but skin is individual. Some people find the peptide serum sits a touch lighter; others prefer the botanical's feel. If your scalp is reactive, patch-test either on the inner forearm first, and read our scalp-signal guide before layering anything.
What is your budget over months, not weeks? This is a consistency purchase, so price the year, not the bottle. No. 01 is $65, No. 02 is $55, a $10 monthly difference that compounds across the eight-to-twelve-week minimum and beyond. If $55 is the difference between staying consistent and quitting at week six, the botanical is the better serum for you, full stop. Whichever you choose, Subscribe & Save takes 15% off and forecloses the accidental three-week gap that resets the clock. Our piece on building a subscription that pays off covers the math.
Are you targeting the DHT angle specifically? No. 01 includes saw palmetto, the botanical 5-alpha-reductase story covered in our saw palmetto and DHT article. If that mechanism is why you are here, it tilts slightly toward No. 01, though rosemary, in both serums, carries a preclinical version of the same mechanism.
You can see both formulations side by side in the serums collection, and if you would rather answer four questions than weigh them yourself, the 90-second hair quiz returns one recommendation.
Who should pick neither (yet)
This is the section most brand comparisons refuse to write. Some people should not buy either serum right now:
Anyone who hasn't ruled out a treatable cause. If your labs haven't been checked, correct that first. Low ferritin and low vitamin D are common, symptomless-until-tested contributors to shedding, and no serum substitutes for fixing them. Our midlife hair shift guide covers the panel worth asking for.
Anyone with sudden, patchy, or rapid loss. That is a dermatologist visit, not a serum decision. A cosmetic product is the wrong tool for a pattern that needs a diagnosis.
Anyone who won't use it consistently. If you know you will not manage most days for three months, neither serum will show you anything, and you will conclude "it didn't work" when the real variable was adherence. Better to wait until you can commit than to spend $55 or $65 testing your own follow-through.
Anyone who wants a drug's effect size. If you have decided you want the strongest available option, both serums will disappoint you by design. Have the clinician conversation instead.
Frequently asked questions
Which serum is more effective, No. 01 or No. 02?
There is no head-to-head trial, so there is no evidence-based winner. They fill the same slot with different ingredient philosophies and make the same honest claims. The more effective one is whichever you will actually use consistently for three months.
Can I use both the peptide and botanical serum together?
There is no reason to. They occupy the same morning slot and target the same goal; using both is redundant and doubles the cost without a known added benefit. Pick one. If you want a second, separate product, the night oil is a different slot.
Why is the peptide serum more expensive?
The synthetic biomimetic peptides that lead No. 01 are a costlier ingredient class than the botanicals that lead No. 02. The $10 difference reflects formulation cost, not a difference in how hard we think each one works.
Is the botanical serum the "natural" option?
It is plant-first, with no synthetic peptides, so if "natural" is your priority, it fits that preference better. We would gently note that "natural" is not the same as "more effective"; both serums are cosmetic products with modest, honest claims.
I'm on minoxidil. Which serum goes with it?
Either can sit alongside a drug routine as scalp-environment support, but confirm with your dermatologist first. The serum addresses a different layer than the drug; it does not replace or boost it in any claimed way.
How do I switch if I picked the wrong one?
Both are covered by our 30-day money-back guarantee, and Subscribe & Save lets you swap, pause, or cancel in one click. If your scalp prefers the other formula, changing is low-friction.
Our editorial approach. Unfurl content is researched and written by named authors and cross-checked against peer-reviewed literature (PubMed, Cochrane, NIH ODS) before publishing. We cite every claim inline. Articles are editorially reviewed, not medically reviewed, and nothing on this site is medical advice. Talk to a clinician before starting any supplement. These statements have not been evaluated by the FDA.
A friendly note to close: we're a hair and scalp care company, not a medical one. Everything here is for general education, not medical advice, and it can't diagnose a condition or take the place of a visit with someone who can examine you. If your hair or scalp has you worried, please talk to a doctor or a licensed clinician you trust.