Rosemary Leaf Oil — The Growth Standard
Dosed at 2.5%, five times a typical serum. The most researched oil for hair density.
0.5mm precision
Dermatologist approved
All-natural actives
Non-greasy formula
120-day guarantee
Rated 4.9 • Thousands of 5-Star Reviews
Clinical Hair Regrowth System
Thicker, Fuller Hair Starts Here
Made with clinically studied rosemary oil to help wake dormant follicles and support visibly thicker, fuller hair — naturally.
Wakes Dormant Follicles
Rebuilds Density
All-Natural Actives
Non-Greasy Formula
0.5mm Precision
Made in the USA
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FREE DearRoot™ Derma Stamp ($19.99 Value)Targets thinning zones
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FREE DearRoot™ Derma Stamp ($19.99 Value)Targets thinning zones
FREE DearRoot™ Derma Roller ($19.99 Value)Boosts serum absorption
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Description
DearRoot™ combines precision 0.5mm micro-channel delivery with a concentrated botanical Root Activator Serum in one simple at-home system.
At the center is clinically studied rosemary leaf oil, dosed at 2.5%, alongside ginger root oil, biotin, castor seed oil, peppermint oil, cold-pressed jojoba oil, and natural vitamin E. Together, these actives help support a healthier scalp environment, reinforce strands against breakage, and promote the look of thicker, fuller hair.†
Two steps working together in one daily ritual — targeted scalp stimulation on one side, concentrated plant-based nourishment on the other.
No silicones, no parabens, no synthetic fragrance. Just lightweight root care that absorbs cleanly and is built for consistency.
About Your Free Gifts
These accessories are designed to make your DearRoot routine more precise, more consistent, and more effective. Yours included free as a thank you for trying DearRoot.
DearRoot™ Derma Stamp:
Our DearRoot™ Derma Stamp is designed to target thinning zones with precise 0.5mm micro-channels, helping prep the scalp before applying your Root Activator Serum. With 140 titanium pins, it presses straight down into the scalp so you can focus on areas like the temples, crown, hairline, or sparse patches without pulling through your hair. A simple tool that turns your nightly serum step into a true root-care ritual.
DearRoot™ Derma Roller:
Our DearRoot™ Derma Roller is designed to support serum absorption across broader areas of the scalp. Use it before applying your Root Activator Serum to help create a better pathway for the formula to reach the areas where it is needed most. Compact, easy to use, and built for consistency, it helps make your DearRoot routine feel intentional from the very first application.
Who Is This For?
DearRoot™ is designed for anyone noticing thinning, shedding, a widening part, sparse areas, or a hairline that does not feel as full as it used to.
It is especially helpful if you want a simple, plant-based scalp routine that fits into your day without harsh formulas, greasy residue, or complicated steps. Use consistently as part of your root-care ritual for the best experience.
Recommended Use
Apply consistently to a clean, dry scalp, focusing on areas where you want fuller-looking hair. Use as directed with the instructions included in your DearRoot™ system, then allow the serum to fully absorb before styling.
Do You Offer a Guarantee?
Yes. Every DearRoot™ order is backed by our 120-day guarantee.
Use DearRoot consistently for a full 120 days. If you are not satisfied with your experience, contact our support team within the guarantee period and we’ll help you with your return.
DearRoot Growth System
$49.99 · 120-day guarantee
4 Clinically-Studied Compounds Doing Different Jobs
Ginger Root Oil — The Deep Purifier
Clears buildup and wakes the follicle base, so the actives can reach the root.
Biotin (Vitamin B7) — The Strand Builder
Reinforces keratin against breakage, so new growth holds on instead of snapping.
Castor Seed Oil — The Moisture Seal
Dosed at 5%. Seals in moisture for thicker-looking strands.
The Problem
Why serums alone often fail
Most hair oils just sit on the surface. If your scalp barrier is intact, expensive growth compounds never reach the root where they're actually needed — you're washing your money down the drain.
The better way — micro-channel delivery. The DearRoot derma roller creates thousands of painless 0.5mm channels in the scalp. Apply the Root Activator Serum immediately after, and the actives flow straight to the follicle bulb instead of evaporating on top of the skin.
- Stimulates circulation — delivers oxygen to starved follicles.
- Anchors the root — protects strands from shedding and breakage.
- No greasy residue — water-light feel, absorbs in seconds.
Inside the Root Activator Serum
Clinically dosed. Nothing hidden.
Most "growth oils" hide a drop of active behind a long fragrance list. Here's exactly what's in the Root Activator formula — and how it compares to a typical drugstore serum.
Active compound
Typical serum
DearRoot
Potency
What you get
Rosemary Leaf Oil
Rosmarinus Officinalis0.5%
2.5% active
+400%
Regrowth shown on par with 2% minoxidil
Ginger Root Oil
Zingiber OfficinaleNot included
1.5%
NEW
Clears buildup and wakes the follicle base
Biotin
Vitamin B70.1%
0.5%
+400%
Reinforces keratin against breakage
Castor Seed Oil
Ricinus Communis2%
5%
+150%
Seals in moisture for thicker-looking strands
Peppermint Oil
Mentha Piperita0.25%
1%
+300%
Drives circulation and oxygen to the scalp
Jojoba Oil
Simmondsia ChinensisRefined
Cold-pressed
UPGRADE
Sebum-matched; absorbs with zero residue
Vitamin E
TocopherolSynthetic
Natural D-alpha
UPGRADE
Antioxidant shield for a healthier scalp
Swipe to see all columns
No silicones, no parabens, no synthetic fragrance. Full INCI list printed on every bottle.
The science of follicle activation
Three phases. One daily ritual.
Phase 01 · Stimulation
The stamp
140 titanium pins press gently into the scalp at a precise 0.5mm — safely targeting thinning edges without tangling long hair.
Phase 02 · Activation
The healing
The micro-channels trigger your body's natural healing response, increasing blood flow and rushing nutrients to the follicle.
Phase 03 · Nourishment
The oil
The Root Activator formula flows through the open channels, penetrating deep to anchor the root and prolong the growth phase.
4.8
10,839 verified reviews
Real stories from men and women
Verified buyer
My barber noticed before I did
Went in for my usual cut and my barber asked what I'd been using — said the crown had filled in noticeably since my last visit. I stamp twice a week and do the serum nightly. Couldn't ask for better proof.
- +Barber-approved density
- +Lightweight, never greasy
- +Two-minute routine
- –Takes consistency — not overnight
Tom B. 5 months
Verified buyer
Literally food for my roots
My scalp drinks it up — my hair comes out softer, smoother and way more manageable. Less shedding, more shine, and it smells lovely. It actually absorbs in instead of just sitting on top.
- +Roots feel fuller & stronger
- +Lightweight, never greasy
- +A little goes a long way
- –Takes consistency — not overnight
Greta All hair types
Verified buyer
Confidence is back
Didn't realize how much the thinning was on my mind until it started reversing. Hair feels thicker, the waves hold their shape again, and I've stopped wearing a cap everywhere. Four months in.
Marcus D.
Verified buyer
Silkier and healthier
I already had decent hair, but this makes it noticeably silkier, healthier and fuller at the roots. Obsessed.
Mai T.
Verified buyer
Watching the gaps close
This is me at month two — you can still see the thin patch, but half of what's there now is new baby hairs coming through. Shedding in the shower basically stopped after week three. I'll update again at month six.
Kyle W. In progress
Verified buyer
Gave my hair life again
I'd damaged my hair for years and finally chopped it off — but the damage was still there until this. I roll, add a little serum and rub it in. Not greasy at all, and the damaged lengths look like they're being repaired. It's made me feel good about my hair again.
Renee P.
Verified buyer
Skeptic, converted
I've tried everything short of a transplant. This is the first thing that made a visible difference at my temples. Two minutes at night after the stamp, zero irritation — even on my sensitive scalp.
Dan H., 46 Temples
Verified buyer
Thicker every year — even in menopause
I'm 53 and in menopause, and my hair only keeps getting thicker. I roll and massage the serum in nightly. Give it time — you'll see baby hairs as the first signal, then they fill right in.
Donna R., 53 Menopause
Verified buyer
Crown covered in 3 months
Family kept pointing out my crown in photos. Three months of near-daily use and it's covered back in. The photo says it all — and it's not styled or filtered, just my living room.
James P. 3 months
Verified buyer
Something finally worked
After my last baby at 39, the pregnancy hair wore off and mine got thinner and thinner. This is under 4 months — and I don't even remember to use it daily! Overall thicker, with baby hairs growing in. And it's NOT oily — I apply at night and my hair's fine by morning.
Steph K., 39 Postpartum
The smart growth choice
DearRoot vs. the alternatives
DearRoot
Hair Transplant
Drugstore Serums
How it works
Targets follicles at the root
Surgical relocation
Coats hair & scalp surface
Time to results
Visible in 30 days
6–12 months recovery
4–6 months (if any)
Formula feel
Lightweight, fast-absorbing
Surgical incisions & scarring
Greasy, oily, or sticky
Time & effort
3 minutes a day, no rinse
Appointments + downtime
Daily, lifelong use
Long-term focus
Builds follicle health
Moves hair, doesn't grow it
Temporary masking
Cost over time
Risk-free & affordable
$10,000 – $20,000+
Ongoing monthly spend
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Your Regrowth
Journey with DearRoot™
DearRoot™ is built for consistent use, not quick fixes. Here's how things tend to shift once it's part of your routine.
Start My Journey →120-day money-back guarantee
Weeks 1–4: The reset
- Shedding slows as compounds anchor the hair bulb.
- Ginger and rosemary balance sebum, calming the scalp.
Month 2: The awakening
- Fine baby hairs sprout where skin was smooth.
- Roots gain volume and lift away from the head.
Month 3+: The transformation
- Baby hairs mature into terminal hairs, filling visible scalp.
- The hairline looks denser and the crown fills back in.
Start My Journey →
120-day money-back guarantee
120
DAYGUARANTEE
Risk-free
Grow it back, or your money back
Give DearRoot a full 120 days — enough for multiple growth cycles. If you don't see your hair coming back, we refund every cent. No questions. No risk. That's how confident we are.
Try DearRoot risk-free →
FAQ
Questions, answered
Results come in three phases. Within 2–4 weeks you'll notice less shedding as the channels stabilize the hair bulb. Between 3–6 months, dormant follicles enter the growth phase for visible density. Hair is slow-growing tissue — any product promising overnight results is ignoring physiology.
No. The stamp creates a clean vertical entry and exit at just 0.5mm. Older rollers can cause track-mark tearing; our micro-channels trigger a healing response (increased blood flow) that typically fades within 2 hours.
Yes. Every needle head is surgical-grade stainless steel. At 0.5mm the needles don't enter the bloodstream. Soak the head in 70% isopropyl alcohol for 5–10 minutes before and after each session.
0.5mm is the "goldilocks" depth — 0.25mm is too shallow to reach the follicle bulb, while 1.5mm is intended for clinical scarring and causes unnecessary bleeding. 0.5mm is the maximum depth for safe, painless home use that still triggers the dormant-growth response.
DearRoot strengthens the root environment rather than masking symptoms. Hair always needs ongoing nutrients, so we recommend a once-weekly maintenance phase after month six to keep follicles in their growth stage.
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