Does cyperus rotundus oil stop hair growth? Here's what it really does
It doesn't rip, burn or dissolve hair. It works on what comes back: slower, finer, lighter regrowth after every shave or wax. That's what made it match laser in a clinical study.
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Cyperus rotundus oil slows hair growth. It does not remove hair. You keep removing hair your way, and the oil works on the next round: regrowth comes back slower, finer and lighter. In a randomized clinical study it reduced underarm hair as effectively as an Alexandrite laser and beat the laser on white hair. That's why Bare Oil is built around it.
Hair removal vs. hair growth inhibitor: the difference that changes everything
Every method you've tried so far is hair removal. A razor cuts hair at the surface. Wax, sugar and epilators pull it out from the root. Depilatory creams dissolve it. All of them deal with the hair that's already there, and all of them leave the follicle ready to grow the next one. That's why stubble shows up by morning and why you're booking the next wax in three weeks.
A hair growth inhibitor is the missing half of the routine. You apply it to the skin after you remove hair, and it targets the regrowth. Instead of erasing hair over and over, you make each round of hair weaker than the last. Less to remove, less often.
| Hair inhibitor (Bare Oil) | Hair removal (razor, wax, cream) | |
|---|---|---|
| What it targets | The hair that grows back | The hair you have right now |
| Result over time | Slower, finer, lighter regrowth | Same hair, same schedule |
| Pain | None. 30 seconds, massage in | Razor burn, wax pain, cream sting |
| Hair colors | All, including blond, red and gray | All |
| Best used | Right after removal, then twice daily | Whenever hair is back |
The winning move is both: remove hair the way you like, then let cyperus rotundus oil stretch the time until you need to do it again.
How hair grows, and where the oil steps in
Every hair follicle runs on a cycle: a growth phase (anagen), a short transition phase (catagen) and a resting phase (telogen) before the old hair sheds and a new one starts. Removal methods interrupt the hair, not the cycle. The follicle simply starts again.
Cyperus rotundus oil is applied to the skin over the follicle, day after day. In the 2014 laser study, the author points to the oil's flavonoids and their antiandrogenic activity on androgen-driven hair, the kind of coarse hair that shows up on the underarms, bikini line, chin and upper lip. The measurable result in the trials: less hair growth, and in the 308-person trial, reduced hair color and hair thickness too.
- SlowerLonger gaps between shaving and waxing sessions.
- FinerRegrowth feels softer, not prickly.
- LighterLess visible shadow under the skin.
- Calmer skinLess redness and fewer bumps after removal.
The science: it matched an Alexandrite laser
In a randomized clinical study published in Aesthetic Surgery Journal (2014), 65 people with unwanted underarm hair were assigned to topical cyperus rotundus oil, saline, or an Alexandrite laser (GentleLase). Results were judged three ways: hair counts, independent professionals and patient self-assessment.
"Cyperus rotundus essential oil is as effective as the Alexandrite laser for decreasing the growth of axillary hair (both dark and white)."Study conclusion · Aesthetic Surgery Journal, 2014 · PubMed 24408514
Follow-up randomized trials: 153 people (PubMed 34618367) and 308 people (PubMed 35290702) both recorded significantly reduced hair growth in the cyperus rotundus oil groups; a 153-person trial after laser favored the oil for pain relief (PubMed 34132024).
So, does it stop hair growth permanently?
Here's the straight talk: Bare Oil is a daily hair inhibitor, not a one-time treatment. Results build with consistent use and are maintained by continuing to use it, exactly like your favorite moisturizer keeps working only while you use it.
And "permanent" is a big word for any method. Laser is sold as long-term reduction, yet most people need 4 to 8 sessions plus maintenance visits (Mayo Clinic), at an average of $697 per session (ASPS). It targets pigment, so light, red, white and gray hair usually can't be treated (UCSF Health). Cyperus rotundus oil matched laser in a clinical study, works on every hair color, and costs $29.99 for a 60-day supply.
Slower regrowth, in their words
★★★★★ Rated 4.9★ · trusted by 100,000+ women worldwide
"Waxing every 3 weeks was actually getting ridiculous 😭 ... My skin is very sensitive, so I was prepared for the usual redness or irritation… but nope. ... the biggest difference has been the regrowth. My hair used to come back pretty quickly and thick, but now it's taking longer and coming back much finer and lighter. I went from booking every 3 weeks to basically forgetting I even need to wax sometimes 😭"
"I didnt really think anything of this at first but Ive been using it for a while and I was like...Why is my hair taking SO much longer to grow back?? lol I used to notice regrowth pretty quickly after waxing and shaving and now I can go way longer before I even feel like I need to book another appointment. And the fact that it doubles as a nice body oil is a bonus. My skin stays soft without that greasy oil feeling and im acctually impressed ngl."
"I swear the worst part of shaving was always the waiting for it to grow back 😭 Started putting this on after my shaves and I've noticed my regrowth is way less noticeable. It takes longer to show up and the hairs feel much finer now. The oil itself is really lightweight too, so I actually enjoy using it instead of forcing myself to remember."
"Okay so I originally got this because I was desperate to make my waxing routine less annoying… Fast forward a couple months and I'm actually shocked at how different my regrowth looks. The hair isn't coming back nearly as fast, and it feels much softer and thinner than before. The oil itself is nice too tho...no sticky feeling and my legs feel smooth after. Was supposed to be a experiment and now I use it every time."
"I honestly bought this because I was tired of feeling like I was constantly waiting for my next laser appointment 😭 I've been using it consistently and the difference in my regrowth is actually crazy. It's coming in much slower and way less noticeable now. ... I used to be on a monthly laser schedule… now I'm stretching it wayyy longer 👀"
Reviews are from verified buyers on our Bare Oil product page (Judge.me), quoted word for word; Spanish reviews are shown with our English translation. Individual results vary.
How to get the most out of a hair inhibitor
- Remove hair your way. Shave, wax, sugar or epilate.
- Apply right after. 3 to 5 drops per area on clean, dry skin. Massage until absorbed.
- Repeat morning and night. Every day, including days you don't remove hair.
- Stay consistent for 4 to 8 weeks. Results compound with every application.
Tip: the oil has the most direct access to the follicle right after hair is pulled from the root, so many people start Bare Oil right after a wax or sugaring session. Shaving works too. Step-by-step guide: how to use cyperus rotundus oil. Area by area: facial hair, bikini line, men's chest and back.
The hair coming back tomorrow is the hair you can still change
Start tonight. Every application builds on the last, so the sooner you start, the sooner your regrowth slows.
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Hair growth vs. hair removal: your questions, answered
Does cyperus rotundus oil stop hair growth?
It slows it down. Cyperus rotundus oil is a hair growth inhibitor: used after shaving or waxing, it makes regrowth come back slower, finer and lighter over time. In a randomized clinical study it reduced underarm hair growth with no significant difference from an Alexandrite laser, and it beat the laser on white hair (PubMed 24408514).
Does cyperus rotundus oil remove hair?
No. It doesn't dissolve or pull out hair you already have. You remove the hair (shave, wax, sugar, epilate), then apply the oil to the freshly cleared skin so the hair that grows back is slower and less noticeable.
Is the result permanent?
Think of it like skincare: results build with consistent use and are maintained by continuing to use it. Laser is marketed as long-term reduction, but most people need 4 to 8 sessions plus maintenance, and it usually can't treat light hair (Mayo Clinic, UCSF Health).
How does a hair inhibitor work?
Hair grows in cycles. Removal methods only clear the current hair. An inhibitor is applied repeatedly to the skin over the follicle to slow the next round of growth. The 2014 study's author notes the oil's flavonoids have antiandrogenic activity on androgen-driven hair.
How long until I see slower regrowth?
Most people notice softer, calmer skin in week 1 and visibly slower, finer regrowth between weeks 4 and 8 of twice-daily use. See the 90-day results timeline compiled from verified customer reviews.
Should I shave or wax before using it?
Either works. Waxing, sugaring or epilating removes hair from the root and leaves the follicle opening clear, so many people start right after a wax. Shaving works too; apply the oil right after. Full routine: how to use cyperus rotundus oil.
Does it work on light or gray hair?
Yes. That's one of its biggest advantages over laser, which targets pigment and usually can't treat blond, red, white or gray hair. In the 2014 study the oil was significantly better than the laser on white hair.
What if it doesn't work for me?
Every bottle of Bare Oil is covered by our 30-day Smooth or It's Free guarantee, and Amazon orders include a 30-day refund or replacement.
References
- Mohammed GF. Topical Cyperus rotundus oil: a new therapeutic modality with comparable efficacy to Alexandrite laser photo-epilation. Aesthetic Surgery Journal. 2014;34(2):298-305. doi:10.1177/1090820X13518801 · PubMed 24408514
- Mohammed GF. Topical Cyperus rotundus essential oil for treatment of axillary hyperpigmentation: a randomized, double-blind, active- and placebo-controlled study. Clinical and Experimental Dermatology. 2022;47(3):534-541. PubMed 34618367
- Mohammed GF, Al-Dhubaibi MS, Mohamed ML. Genital whitening with topical Cyperus rotundus oil enhances sexuality and quality of life. Journal of Cosmetic Dermatology. 2022;21(10):4490-4502. PubMed 35290702
- Mohammed GF. The effectiveness of Cyperus rotundus essential oil in reducing the side effects of laser hair removal. Journal of Cosmetic Dermatology. 2022;21(4):1501-1505 (online 2021). PubMed 34132024
- Mayo Clinic. Laser hair removal. mayoclinic.org
- UCSF Health. Laser hair removal. ucsfhealth.org
- American Society of Plastic Surgeons. Laser hair removal cost (2023 statistics). plasticsurgery.org
Published by nellaskin, the maker of Bare Oil. The clinical studies cited tested topical cyperus rotundus essential oil, the hero ingredient in Bare Oil. Individual results vary with hair type and consistency of use. Not medical advice; talk to a dermatologist or physician about unwanted hair related to a medical condition.
Bare Oil: the hair inhibitor oil that matched laser in a clinical study30-day Smooth or It's Free · Ships from Amazon · $29.99