KilgourMD Prevention SerumTo Stop Hair Loss In 6 Weeks
From the published KilgourMD trial — a Stanford-trained dermatologist’s 30-second nightly routine, formulated from actives backed by over 40 studies. 200,000 women now use it.
- 68% less shedding in just 6 weeks1
- 2× more hair growing9, 79% more density10
- 30 seconds — lightweight, never greasy
- No hormones, minoxidil, or side effects1
Choose Your Option Your 28% is held for 1:24:45
Your order is protected by a full money-back guarantee. If you don’t see less shedding and thicker, fuller hair within 90 days, we’ll refund every penny — no bottles to return, no questions asked.
200,000+ users · 1,400 doctors
Growth phase
Shortened
Results in
6 weeks1
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3-Month Supply · $64 / month
You pay $192 upfront and we ship all 3 months together within 24 hours. Every 3 months, your next shipment renews automatically at the same $192 rate — the lowest price we offer. Save 28% vs. one-time pricing.
1-Month Supply · $75 / monthYou pay $75 and we ship a 30-day supply of the Prevention Serum within 24 hours. Every 30 days, your next bottle renews automatically at the same $75 rate. Save 15% vs. one-time pricing.
Cancel · Pause · RefundCancel or pause anytime — one click in your customer portal or a quick email. No phone calls. No “retention specialists.” No hoops. You hit cancel, it’s done. Refund hits your account within 3–5 business days. That’s it.
Both options include free priority shipping on every order, and access to Dr. Kilgour’s protocol support team if you have questions about your routine.
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You can cancel anytime, right from our website. No phone call, no waiting on support.
And there’s no password to remember. Just enter your email and we’ll send you a link to log in. Tap the link and you’re in.
Here’s how:
- Go to kilgourmd.com.
- Click “My Account” at the top right (next to the cart icon), or scroll to the bottom of the page and click “Manage Deliveries.”
- Enter the email you used for your order.
- Once you’re in, click cancel. Done.
Not sure which email you used? Open any order confirmation email from us. There’s a link inside that takes you straight to your account — every time, no login needed.
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Nothing in the Prevention Serum comes from animals — not a single ingredient — and nothing is ever tested on them.
It’s safe around them, too. Minoxidil is toxic to cats — and not just if they lick the bottle. Residue on your hands, your pillowcase, the towel you used — a cat that curls up where you slept and grooms itself can get enough to make it seriously ill, sometimes fatally. It carries none of that risk. You can keep them on the counter and never worry about your cat or dog.
Beauty and wellness should never come at a cost — to you, or to the animals you love.
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KilgourMD is HSA and FSA eligible — most hair products aren’t, because they’re classified as cosmetic.
We’ve partnered with Flex, so you can pay with your HSA or FSA card at checkout, or pay normally and submit for reimbursement after. The link’s on your confirmation page.
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Free shipping on every order. Most orders ship same day and arrive within 3–5 business days.
If you’re not seeing results after 90 days of consistent use, we’ll refund you. No questions, no hassle, you don’t even need to send the bottle back.
Cancel or pause your deliveries anytime — no fees, no hoops. Just log into your account or email our team.
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One serum, one 30-second routine, once a day before bed. Apply the Prevention Serum — one dropperful to your scalp, parted in 2–3 sections, directly on the scalp (not your hair). Massage it in for 30 seconds and let it absorb.
Your scalp repairs itself during sleep. Blood flow increases, cell regeneration peaks. The serum works with that cycle overnight.
Based On Your Answers And The Trial, Here’s What To Expect
Week 0
Where you are now
Every wash is a test you’re afraid to fail. You check the drain, you feel the ponytail, you look at your part in the wrong light. Here’s exactly what happens next.
Weeks 1–4
You won’t see anything yet, and that’s normal
This is where people give up, so know it now. Right now the balance is tipped the wrong way — too much of your hair finishing, not enough growing. AnaGain is tipping it back, and RootBioTec is feeding the base of each follicle so the empty ones can start again.
It’s all happening under your scalp. Nothing shows on the surface for a few weeks because nothing has surfaced yet.
Weeks 4–6
Wash day stops being the bad day
Now the balance has moved, and this is the first place it shows. More of your hair is in the growing phase, so less of it is finishing and falling. Less in the drain, less in the brush, less on your clothes. Shedding down as much as 68% in the study1.
Weeks 8–12
Short hairs at your part
Everything AnaGain moved back into growing has been growing this whole time. Now it reaches the surface. Not breakage — new growth, all one length, standing straight up.
Weeks 12–16
Your ponytail feels like it used to
And it comes back thick rather than fine, because Capixyl works on what gets built. You tie it up and it’s fuller in your hand than it’s been in years. Your part narrows.
No Side Effects
No Prescription
Built For Women 40+
90-Day Guarantee
Menopause Hair Stories From Our Customers ❤️
Visible Results In 90 Days Or Your Money Back
Use KilgourMD Prevention every night for 90 days. Don’t see less shedding and a fuller ponytail? You get every dollar back. Less than 3% of our customers ever claim it.
For every woman told it’s just her age 🤍
This started with my mom, back in 2020.
She’d tie her hair up and there’d be nothing in her hand. So she stopped tying it up. Then she stopped wearing it down, because you could see her scalp.
She asked me about it, and I gave her the same answer she’d had from everyone else. Be patient, it’s your age.
That was wrong. And I’m a dermatologist — I should have known better.
Here’s what I found when I actually went and looked.
Almost nothing in this category has been tested on women her age. The trial that got minoxidil approved for women capped at forty-nine. Not one of them was through menopause. And the ingredient studies everyone quotes were run on men in their twenties and thirties.
So the entire shelf was built on evidence from people who aren’t her, and sold to her anyway.
And nobody tests the bottle. They test one ingredient in a lab, then sell you a formula that ingredient is barely in. That’s why results are so wildly inconsistent, and why women end up with a drawer full of things that did nothing.
That’s what I built this against.
Two years of reading everything, testing formulas, throwing most of them out. Then I tested the finished thing, which almost nobody does. An independent lab counted every strand, by hand. Not a survey. Counted. And we published it.
There’s maybe a handful of studies in menopausal women anywhere in this field. Ours is one.
Her hair came back. That’s the whole reason this exists.
And here’s my promise.
Use it every night for ninety nights. If your shedding hasn’t visibly slowed and nothing’s filled in, one email and you get every penny back. Keep the bottle. No forms, no questions, no sending anything anywhere.
I’m not asking you to believe me. You’ve been asked to believe people before.
I’m asking you to give it three months and let your own drain tell you.
Dr. James Kilgour, MDBoard-certified dermatologist
Two Years Of WorkHow This Serum Came To Exist
Two years of building it, and the two things that nearly stopped it working.
Everything on that shelf treats hair loss in general. Nothing was built for the one thing that changes after menopause — the growth phase getting cut short.
So supplements feed hair that isn’t underfed, shampoos rinse off in ninety seconds, and a shorter cut removes hair to make hair look fuller. None of them touch how long a hair grows, because none of them were ever aimed at it.
That’s what I built this for.
You can have exactly the right actives and still get nothing. That’s the part almost nobody talks about.
The part of the follicle that decides how long a hair grows sits at the very bottom of it — and most of what you put on your scalp never gets past the opening at the top. So an ingredient that works beautifully in a lab does nothing on a real head, because it never arrives.
That’s the problem I spent most of those two years on. The liposomal delivery came out of my time at Stanford — the actives are wrapped so they’re carried through the barrier instead of sitting on top of it.
In an independent permeation study, six times more active was delivered than by a competing serum.2
Results in this category are wildly inconsistent, and the reason is that nobody tests the finished bottle — they borrow their proof from ingredients studied in a lab.
So I ran it two ways.
First, exactly as you’d use it. Women at home, nightly, for four months. Not a lab applying it to a patch of skin — the real routine, in a real bathroom.
Second, with something you could actually count. The lab washed their hair, collected every strand that came out, dried them and counted them by hand. Then sorted them by length, because it matters which ones you’re losing.
And two dermatologists graded the regrowth, independently, with no involvement in the study.
No Side Effects
No Prescription
Built For Women 40+
90-Day Guarantee
Trusted By The ExpertsDermatologists. Dietitians.
Over 200,000 Women. They
all trust KilgourMD.
Dr. James Kilgour
Stanford-Trained, Board-Certified Dermatologist · Founder
“My own mother lost her hair through menopause, and nothing she tried touched it. Nobody had built anything for the thing that actually changes. So I did, then I ran the trial, counted every strand by hand, and published it.”
Jennifer Hanway
Holistic Nutritionist · Advisor to L’Oréal & Johnson & Johnson
“Most women treat their hair. The ones who get it back treat what menopause did to the follicle. In 19 years I’ve not seen another study count every strand by hand — with zero side effects. It’s the only protocol I recommend for this.”
Ilyse Schapiro, MS, RD, CDN
Registered Dietitian · 20 Years in Practice
“Every menopausal client I see asks me about her hair, and she’s already been told to take biotin. I’m a dietitian and I’ll say it plainly: this isn’t a nutrition problem. No supplement changes how long a hair grows.”
Alyssa Nishihira, PA-C
Hair Restoration Specialist
“Women come to me having spent years and thousands on products aimed at the wrong thing. Treat what actually changed and you keep what you’ve still got — which is the part nobody tells you is time-sensitive.”
Dr. Manhong Ma, MD
Dermatology · 34 years
“I like this for thinning or slower regrowth from aging or hormonal shifts. Give it 3 to 6 months, since hair grows on a months-long cycle. It protects the follicle and reduces shedding, with botanicals to support hair in the growth phase.”
Dr. Adeeba Akhtar, MD
Primary care · 21 years
“It combines actives across the full growth cycle: Capixyl reinforces its attachment to the scalp, and Procapil nourishes the root so fewer hairs fall. For anyone noticing thinning or hair loss, I’d strongly recommend it.”
Matched Against The ResearchBased On Your Profile, Here’s Why What You’ve Tried Hasn’t Worked
After menopause your growth phase gets cut short — each hair finishes sooner, and more of them finish at once.3 4 5 6 7 Here’s why the usual fixes were never going to touch that.
The claim: Feed your hair the vitamins it’s missing and it grows back stronger.
The truth: Biotin only does anything if you’re actually low on it — and severe deficiency in people eating a normal diet has never been reported. That’s the NIH’s own wording. Your hair isn’t finishing early because it’s underfed, and a vitamin can’t lengthen a growth phase. When researchers tested biotin against a dummy pill, both groups grew the same amount of hair. The skin doctors’ own board says plainly it shouldn’t be used for hair loss.
And there’s a second problem. Biotin interferes with lab tests — the FDA issued a safety communication about it, and the panel it distorts most is thyroid and ferritin. Which is the exact panel your doctor ran when you went in about your hair.
Journal of Clinical & Aesthetic Dermatology, 2024; NIH Office of Dietary Supplements; FDA safety communication, 2017.
The claim: The one FDA-approved drug for women’s hair loss.
The truth: Its own NIH page opens by saying the precise mechanism remains inadequately understood — after forty years. What it does do is shorten the resting phase, so the next hair starts sooner. That’s why it makes you shed harder for the first two months; the same page lists that as a side effect.
But your problem isn’t that your hair takes too long to restart. It’s that once it starts, it doesn’t grow for long enough. And the trial that got minoxidil approved for women was 381 women aged eighteen to forty-nine — not one of them was through menopause. It also needs an enzyme in your scalp to convert it, which a lot of women don’t have enough of. Stop, and you’re back within a few months.
NIH StatPearls; Lucky et al., Journal of the American Academy of Dermatology, 2004.
The claim: Put the actives straight on your scalp and they get to work.
The truth: It’s the same problem as a supplement, just at the other end. With a pill, some of it gets absorbed and most of it doesn’t. With a serum, some of it gets through your scalp and most of it sits on top.
Because the part of the follicle that decides how long a hair grows is at the very bottom of it, and your scalp’s outer layer is built to keep things out. Researchers say most of what you apply never gets past the opening at the top — for minoxidil, roughly 1.4% is absorbed through an intact scalp.8
So it isn’t enough for the right active to be in the bottle. It has to arrive. That’s why ours are wrapped in liposomes that carry them through the barrier instead of leaving them on it.
Hair follicle-targeting drug delivery strategies for the management of hair follicle-associated disorders, PMC9237597.
The claim: Drink your collagen and rebuild the foundation your hair grows from.
The truth: Your hair is keratin, not collagen — and your body digests the powder long before any of it could reach your scalp. Where those amino acids end up is decided by your body, and follicles are last in the queue. The Cleveland Clinic says there’s no strong evidence collagen grows hair in people; the hopeful results come from cells in a dish and mice. It helps skin and nails. Not this.
Cleveland Clinic.
The claim: Target the root causes of thinning from the inside out.
The truth: A major review in the Journal of the American Academy of Dermatology concluded there isn’t enough evidence to recommend the vitamins and minerals these are built on. And underneath that: your loss is at the follicle, and a pill has to cross your whole body and hope a trace arrives. None of it changes how long a hair stays growing.
Journal of the American Academy of Dermatology.
No Side Effects
No Prescription
Built For Women 40+
90-Day Guarantee
KilgourMD Prevention SerumTo Stop Hair Loss In 6 Weeks
From the published KilgourMD trial — a Stanford-trained dermatologist’s 30-second nightly routine, formulated from actives backed by over 40 studies. 200,000 women now use it.
- No hormones
or minoxidil - No side
effects - Real hair
growth - Doesn’t weigh
down fine hair - 30 second
routine - Full 90-day
guarantee
Choose Your Option Your 28% is held for 1:24:45
Your order is protected by a full money-back guarantee. If you don’t see less shedding and thicker, fuller hair within 90 days, we’ll refund every penny — no bottles to return, no questions asked.
-
-
3-Month Supply · $64 / month
You pay $192 upfront and we ship all 3 months together within 24 hours. Every 3 months, your next shipment renews automatically at the same $192 rate — the lowest price we offer. Save 28% vs. one-time pricing.
1-Month Supply · $75 / monthYou pay $75 and we ship a 30-day supply of the Prevention Serum within 24 hours. Every 30 days, your next bottle renews automatically at the same $75 rate. Save 15% vs. one-time pricing.
Cancel · Pause · RefundCancel or pause anytime — one click in your customer portal or a quick email. No phone calls. No “retention specialists.” No hoops. You hit cancel, it’s done. Refund hits your account within 3–5 business days. That’s it.
Both options include free priority shipping on every order, and access to Dr. Kilgour’s protocol support team if you have questions about your routine.
-
You can cancel anytime, right from our website. No phone call, no waiting on support.
And there’s no password to remember. Just enter your email and we’ll send you a link to log in. Tap the link and you’re in.
Here’s how:
- Go to kilgourmd.com.
- Click “My Account” at the top right (next to the cart icon), or scroll to the bottom of the page and click “Manage Deliveries.”
- Enter the email you used for your order.
- Once you’re in, click cancel. Done.
Not sure which email you used? Open any order confirmation email from us. There’s a link inside that takes you straight to your account — every time, no login needed.
-
Nothing in the Prevention Serum comes from animals — not a single ingredient — and nothing is ever tested on them.
It’s safe around them, too. Minoxidil is toxic to cats — and not just if they lick the bottle. Residue on your hands, your pillowcase, the towel you used — a cat that curls up where you slept and grooms itself can get enough to make it seriously ill, sometimes fatally. It carries none of that risk. You can keep them on the counter and never worry about your cat or dog.
Beauty and wellness should never come at a cost — to you, or to the animals you love.
-
KilgourMD is HSA and FSA eligible — most hair products aren’t, because they’re classified as cosmetic.
We’ve partnered with Flex, so you can pay with your HSA or FSA card at checkout, or pay normally and submit for reimbursement after. The link’s on your confirmation page.
-
Free shipping on every order. Most orders ship same day and arrive within 3–5 business days.
If you’re not seeing results after 90 days of consistent use, we’ll refund you. No questions, no hassle, you don’t even need to send the bottle back.
Cancel or pause your deliveries anytime — no fees, no hoops. Just log into your account or email our team.
-
One serum, one 30-second routine, once a day before bed. Apply the Prevention Serum — one dropperful to your scalp, parted in 2–3 sections, directly on the scalp (not your hair). Massage it in for 30 seconds and let it absorb.
Your scalp repairs itself during sleep. Blood flow increases, cell regeneration peaks. The serum works with that cycle overnight.
No Side Effects
No Prescription
Built For Women 40+
90-Day Guarantee
Frequently Asked Questions
Founded by Dr. James Kilgour, MD — board-certified dermatologist, Fellow of the American Academy of Dermatology, Stanford School of Medicine.
Our trial is published in the Journal of Drugs in Dermatology. Every strand was counted by hand by Dermaclaim, an independent lab. Density was graded by two board-certified dermatologists with no involvement in the study.
More than a thousand US clinicians supply KilgourMD to their own patients. More than 200,000 women use it.
Phone: +1 (844) 889-5348
Email: hello@kilgourmd.com
Mailing Address: 300 Delaware Ave, Ste 210, Wilmington, DE 19801, United States
Enter your email and your 10% off unlocks right here. It stacks on any active discount.
Authentic KilgourMD products are not sold on Amazon or other websites.
1. Kilgour J, et al. Journal of Drugs in Dermatology, 2026. Four-month clinical evaluation in women with alopecia and excessive shedding; wash-test and combing-test shed counts and Ludwig-scale density. Conducted independently by Dermaclaim, Spain (Ref. DC.708.36.136). Every shed hair collected, dried and counted by hand, and sorted by length; density graded separately by two independent board-certified dermatologists.
2. Permeation Study of The Prevention Scalp Serum. Report MIET/CCFT/2025-08/1804H, Centre for Cruelty-Free Testing, MIET Meerut, August 2025. In-vitro permeation, Strat-M membrane, Franz diffusion cell, HPLC quantification at 280 nm. OECD GLP-compliant.
3. Rushton DH, Westgate GE, Van Neste DJ. Following historical ‘tracks’ of hair follicle miniaturisation in patterned hair loss: are elastin bodies the forgotten aetiology? Experimental Dermatology, 2022;31(2):102–109. PMID 34008225.
4. Gupta AK, Economopoulos V, Mann A, Wang T, Mirmirani P. Menopause and hair loss in women: exploring the hormonal transition. Maturitas, 2025;198:108378. PMID 40318238. Open access.
5. Van Neste D. Exhaustive analysis of scalp hair regression in women. Plastic and Aesthetic Research, 2021;8:16. 304 female patients and 38 controls; anagen hair density measured by phototrichogram.
6. Robbins C, Mirmirani P, Messenger AG, et al. What women want — quantifying the perception of hair amount: an analysis of hair diameter and density changes with age in Caucasian women. British Journal of Dermatology, 2012;167(2):324–332. PMID 22524482. 1,099 women.
7. Courtois M, Loussouarn G, Hourseau C, Grollier JF. Ageing and hair cycles. British Journal of Dermatology, 1995;132(1):86–93. PMID 7756156. Longitudinal phototrichogram, monthly observation over 8–14 years.
8. Hair follicle-targeting drug delivery strategies for the management of hair follicle-associated disorders. PMC9237597. Reports approximately 1.4% absorption of topically applied minoxidil through normal intact scalp.
9. AnaGain™ — Mibelle Biochemistry. Schmid D, Belser E, Zülli F. Personal Care, March 2013. Placebo-controlled clinical study; anagen/telogen ratio and hair density measured by phototrichogram.
10. Capixyl™ — Lucas Meyer Cosmetics. Loing E, et al. Journal of Cosmetic Science, 2013. Randomised, placebo-controlled clinical study; anagen and telogen hair density measured by trichogram. Also Lueangarun S, Panchaprateep R. Journal of Clinical and Aesthetic Dermatology, 2020;13(10):32–37 — 24-week prospective, randomised, triple-blind controlled trial in men and women, compared against 3% minoxidil solution.
11. Procapil® — Sederma. Randomised, placebo-controlled clinical study; anagen/telogen ratio measured by videotrichography, with hair fall assessed over four months.
12. RootBioTec™ — Mibelle Biochemistry. Clinical study in volunteers with mild to moderate hair loss, predominantly women, mean age 51; shed hair collected and counted over three consecutive days at each timepoint. Supported by in-vitro work on 5α-reductase type II inhibition and dermal papilla cell proliferation.
13. L-Ascorbic Acid — Antioxidants, 2022 (ascorbic acid and dermal collagen synthesis); International Journal of Cosmetic Science, 2021 (oxidative stress and the scalp).
14. Biotin — Yelich A, Jenkins H, Holt S, Miller R. Biotin for hair loss: teasing out the evidence. Journal of Clinical and Aesthetic Dermatology, 2024;17(8):56–61. PMID 39148962. NIH Office of Dietary Supplements: severe biotin deficiency in people consuming a normal diet has never been reported. FDA Safety Communication, November 2017: biotin interference with laboratory tests, most notably thyroid and ferritin assays.
15. Minoxidil — Minoxidil. StatPearls, National Library of Medicine. States that the precise mechanism of action remains inadequately understood and that shortening of the telogen phase can result in excessive shedding. Lucky AW, Piacquadio DJ, Ditre CM, et al. A randomized, placebo-controlled trial of 5% and 2% topical minoxidil solutions in the treatment of female pattern hair loss. Journal of the American Academy of Dermatology, 2004;50(4):541–553. 381 women aged 18–49.
16. Collagen — Cleveland Clinic; human studies (Arias 2022; Milani & Colombo 2023) used mixed formulations.
17. Hair supplements — Journal of the American Academy of Dermatology, review of vitamins and minerals in hair supplements.
Quiz results and match scores are estimates based on your answers, not a medical assessment or diagnosis. Individual results vary and are not guaranteed. Images may include clinical trial photography, unretouched customer photos, and other visual examples; before-and-after photos show individual experiences and are not a guarantee of results.
© 2026 KilgourMD. Statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease. This page is for educational purposes and is not individual medical advice; consult your doctor before use.
Your 28% is held for 1:24:45 · 90-day guarantee