Clear and weightless
Water-based. Absorbs in seconds, leaves no film on fine hair.
Shop / The AM/PM System
Finish
Color
Safe on grey and highlights
Colorist-tested on blonde, grey and color-treated hair.
Routine
Two minutes, no rinse
One dropper at the part, massage, and style as normal.
Both serums — morning and night
The AM/PM System
The two-serum routine for hormonal thinning after 45.
Two serums for hair that changed when your hormones did. Density Serum every morning, Shed Serum at night while shedding is active. Two minutes, nothing to rinse off.
Most chosenThe 90-day protocol: both serums, three months, one payment. $237 instead of $294 — $79 a month, and nothing recurring to cancel.
In stock — ships in 1–2 business daysFree US shipping · no minimumTry it risk-free for 90 days
Secure checkout
90Days
Empty bottle, full refund.Use it every day for 90 days. If your scalp and hair don't look better to you, email us one line and we refund it. Nothing to ship back, no form to fill in.
1. Part. On a clean scalp, part your hair to expose the skin.
2. Apply. One dropper directly to the scalp — hairline, part, crown, anywhere it feels thin or tight.
3. Massage. Fingertips, 30 seconds, firm circles. This is the part people skip and it is the part that matters.
4. Leave it. No rinsing. Style as normal.
Daily, morning or night — pick the one you will actually keep doing. Wet hair or dry, it makes no difference. One 30ml bottle is 30 days at one dropper a day.
A clear, water-based leave-in formula written against hormonal thinning specifically: scalp hydration, scalp comfort and the appearance of density. Not an oil, so it leaves nothing on fine hair.
The full ingredient list is printed on the carton.
Contains no minoxidil. Cosmetic product for external use only.
For. Women in perimenopause or after it, seeing a wider part, a thinner ponytail, or more shedding than they used to. Fine hair, thick hair, straight, wavy, coily — it goes on the scalp, so texture doesn't change the answer.
Not for. Postpartum shedding, alopecia areata, hair loss under active medical treatment, or anyone under 35. Saying no to those is what makes the yes credible.
Pregnant or nursing, or being treated for a scalp condition — check with your doctor first.
On a GLP-1 (Ozempic, Wegovy, Zepbound)? Weight-loss shedding lands on top of hormonal thinning. Read what to do.
Free shipping on every US order. Packed in 1–2 business days, then 3–5 in transit. US addresses only for now.
The 90-Day Promise: use it for 90 days, finish the bottle if you want, and if your scalp and hair don't look better to you, email us and we refund it. You don't ship anything back. Full terms on the returns page.
Still deciding?
No. It is water-based and clear — not an oil. One dropper absorbs in seconds and leaves no film, which is the whole reason it is a serum and not a scalp oil.
Yes, and it is tested on both. No warmth, no brassiness, no interference with a gloss or a toner. It sits on the scalp, not on the strand.
It layers under any styling product. If you are using a medicated treatment, ask the prescriber before adding anything to the same scalp — that is their call, not ours.
Stop using it and email us. We refund you regardless of how long you have had it. Patch test behind the ear first if your skin is reactive.
30 days at one dropper a day. The dropper is graduated so you can see how much you are using.
The AM/PM System
$237.00
What happens after you order
No surprises. Here is the next ninety days.
Today
Order
Free US shipping. Packed within 1–2 business days, at your door in 3–5. Tracking by email.
Day 1
Photograph, then apply
Take the day-1 photo of your part before the first dropper. The routine card and photo guide are online.
Day 30 & 60
Keep going
Comfort first, then the brush. Day 60 is where most people quit. It is also the month where nothing seems to happen. Keep going anyway.
Day 90
You decide
Compare the photos in the same light. Better? Keep going. Not? One email and we refund it. Nothing to ship back.
The cause
It isn't your shampoo. It's estrogen.
01 — At the scalp
The growth phase shortens.
Estrogen helps keep a follicle growing. As it declines, that phase gets shorter and more follicles rest at once.
02 — What you see
The part widens first.
Finer, shorter strands replace mature ones. Density drops where it shows most.
03 — What the Density Serum does
It works on the skin, daily.
Hydration, comfort and the appearance of density — at the part, every morning, for as long as you keep going.
No. It is water-based and clear — not an oil. One dropper absorbs in seconds and leaves no film, which is the whole reason it is a serum and not a scalp oil.
Yes, and it is tested on both. No warmth, no brassiness, no interference with a gloss or a toner. It sits on the scalp, not on the strand.
It layers under any styling product. If you are using a medicated treatment, ask the prescriber before adding anything to the same scalp — that is their call, not ours.
Stop using it and email us. We refund you regardless of how long you have had it. Patch test behind the ear first if your skin is reactive.
30 days at one dropper a day. The dropper is graduated so you can see how much you are using.
What you actually get
The whole protocol, itemised.
No mystery bundle. Here is every line, at the price it would cost on its own.
Start the 90 days $237The Density Serum × 3Restore + strengthen. Every morning, three months.
$174The Shed Serum × 3Protect + maintain. Nights, when shedding is active.
$156The routine cardOnline. What to do, in what order, and when to stop looking for change.
FreeThe 90-day photo guideHow to shoot your part so the day-90 comparison is honest.
FreeFree US shippingEvery order, no minimum.
FreeThe 90-Day PromiseEmpty bottle, full refund, nothing shipped back.
FreeBought one bottle at a time$330
Bought month by month as the System$294
The 90-Day Protocol, one payment$237
$57 less than three months of the System bought monthly. $93 less than six single bottles.
What you are actually risking
You have already spent more than this on things that did nothing.
~$120A year of biotin
~$40Rosemary oil from TikTok
~$180The serum you quit at week five
$0What Boon Labs costs you if it does nothing
90Days to decide
Empty bottle, full refund, nothing shipped back.
Use it every day for ninety days. Finish the bottles if you want. If your scalp and hair do not look better to you, email one line to help@theboonlabs.com and we refund the whole order.
No form, no return label, no restocking fee. The only thing you spend that you do not get back is two minutes a day.
Figures in the row above are typical US retail for those categories, shown for orientation. One claim per customer; full terms on the returns page.
Good to know
For external use only. Avoid the eyes. Patch test behind the ear first if you have sensitive skin. Stop use if irritation develops. Store at room temperature. Keep out of reach of children. Ask your doctor first if you are pregnant, nursing, have a diagnosed scalp condition, or are being treated for hair loss. Boon Labs is a cosmetic product. Nothing here is medical advice, diagnosis or treatment, and individual results vary.