• Founded By

    Environmental Engineers

  • Made in Montréal

    Serving Canada Since 2010

  • Free Shipping

    On Orders $75+

  • Easy Returns

    Money Back Guarantee

(104)

Pure Castor Oil

120ml
Volume
90%
Ricinoleic Acid
100%
Purity
Cold-PressedHexane-FreeCruelty-FreeEco-Packaged
Build your kit & saveComposez votre trousse & économisez

Mix and match any sizes and scents in one order. Mélangez formats et parfums dans une seule commande.

Your selectionVotre sélection
🛒 🥤 💄 👜
30-day guaranteeGarantie 30 jours Made in CanadaFait au Canada
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Get it byReçu d'ici le

June 26

if you order todaysi vous commandez aujourd'hui

Fast DeliveryLivraison rapide
Secure CheckoutPaiement sécurisé

Product details

01 Description
100% PureCold-PressedHexane-FreeVegan

The lash-and-brow oil — 90% ricinoleic acid, the highest concentration of any plant oil on earth. Cold-pressed from Ricinus communis seeds, nothing added, nothing removed.

Castor oil is thick, viscous, and unlike anything else in the carrier-oil family. The reason is ricinoleic acid — a rare hydroxylated fatty acid that makes up roughly 90% of castor oil’s composition. Almost no other plant oil contains it in meaningful amounts. That single compound is why castor oil has been traditionally used for eyelash conditioning, eyebrow thickness, and hair growth support for generations. It coats each strand, holds moisture against the follicle, and creates a barrier that may help reduce breakage over time.

Sampson’s castor oil is cold-pressed — mechanically extracted from the seeds of the Ricinus communis plant without hexane or chemical solvents. The result is a pale golden oil with a faint nutty scent, full fatty-acid profile intact, and no solvent residues. One ingredient. One bottle. The same oil that has been a staple in apothecary cabinets for centuries.

Who it’s for

👁

Lashes & Brows

Traditionally used to condition eyelashes and eyebrows — may help support thickness and reduce brittleness over consistent use.

💧

Hair Growth

Applied to the scalp as a pre-wash treatment. Ricinoleic acid may help support circulation to the follicle and reduce breakage.

Skin Care

Deep moisture for dry patches, cuticles, and rough elbows. Thick enough to stay put overnight — seals hydration where lighter oils evaporate.

🦴

Joint & Muscle

Used topically on sore joints and tired muscles. A traditional remedy — the oil’s thickness makes it ideal for slow-absorbing massage.

🌱
The Sampson Promise

“We only put ingredients in our products that we would use on our own family. Every ingredient has a purpose. If it doesn’t need to be there, it isn’t.”

Volume

120 ml / 4 oz

Extraction

Cold-Pressed

Composition

100% Ricinus Communis

Key Compound

90% Ricinoleic Acid

Cruelty-Free

Yes

Vegan

Yes — plant-derived

02 Benefits
👁

Eyelash & Eyebrow Conditioning

Lash & Brow Care

Castor oil for eyelashes and eyebrows is one of the oldest beauty rituals in the book. The oil’s high viscosity coats each hair from root to tip, and ricinoleic acid may help support the follicle environment. Consistent nightly application — typically 4–8 weeks — is how most people report visible results.

💧

Hair Growth Support

Scalp Health

Applied directly to the scalp, castor oil for hair growth works as a pre-wash treatment. The ricinoleic acid may help support blood flow to the follicle, while the thick oil itself reduces mechanical breakage by coating the shaft. Best used warm — heat improves spreadability and absorption.

Deep Skin Moisturizer

Barrier Repair

Where lighter oils absorb and evaporate, castor oil sits on the surface and seals. That thickness is the point — it creates an occlusive barrier that locks hydration underneath. Particularly useful on dry cracked heels, rough elbows, and cuticles that peel in winter.

🌿

Anti-Inflammatory Properties

Ricinoleic Acid

Ricinoleic acid — the fatty acid unique to castor oil — has been studied for its anti-inflammatory properties. Traditionally used in topical applications for joint discomfort and muscle soreness. The mechanism is the same reason it works on irritated skin: it may help modulate the local inflammatory response.

🧪

Versatile Carrier Oil

DIY Base

Castor oil blends well with lighter carrier oils (jojoba, almond, argan) and essential oils. Use it as a base for DIY serums, hair masks, or body oil blends. Its thickness makes it a natural thickener — a few drops added to a thinner oil changes the texture entirely.

03 How to Use
01

Lashes

Dip a clean mascara wand or spoolie into the oil. Apply a thin coat along the upper lash line, working from root to tip. Do this before bed on clean, makeup-free lashes. Consistency matters more than quantity — a light coat nightly for 6–8 weeks is the traditional approach.

02

Brows

Place a small drop on your fingertip and massage into the brow in the direction of hair growth. Focus on sparse areas. Apply at night so the oil has hours to sit undisturbed. Some people see visible changes in 4–6 weeks of nightly use.

03

Hair & Scalp

Warm a tablespoon of oil between your palms and massage into the scalp in circular motions. Work through the lengths if your hair is dry or damaged. Leave for at least 30 minutes (or overnight under a shower cap for deeper conditioning), then shampoo out. Two washes may be needed — castor oil is thick.

04

Skin & Body

Apply directly to dry patches, cracked heels, or cuticles. For larger areas, mix 1:1 with a lighter carrier oil (almond or jojoba) to improve spreadability. Castor oil on its own is too viscous to spread easily over large skin areas.

Castor oil is thick by nature — that’s the ricinoleic acid at work. For easier application on hair and skin, mix it 1:1 with sweet almond oil or jojoba oil. You get the benefits of ricinoleic acid with the spreadability of a lighter carrier.

04 Ingredients
🌿

Ricinus Communis (Castor) Seed Oil

Single Ingredient

100% cold-pressed castor seed oil. The fatty acid profile is dominated by ricinoleic acid (~90%), with linoleic acid (~4%), oleic acid (~3%), stearic acid (~1%), and trace palmitic and dihydroxystearic acids making up the balance. No other plant oil has this composition — ricinoleic acid is essentially unique to the castor bean.

Full INCI

Ricinus Communis (Castor) Seed Oil.

* External use only. Avoid contact with eyes. If irritation occurs, discontinue use. Patch test recommended for sensitive skin.

Diana Trasente, CEO and Environmental Engineer

"After 25+ years cleaning up polluted soil and water, we turned that same science on the products inside your home."

Diana Trasente, CEO, M.Eng.

Environmental Engineer & Co-Founder

Founded by Environmental EngineersChild & Pet Safe Ingredients20,000+ Happy CustomersProudly Made in Canada

Real ResultsRésultats réels

What Our Customers SayCe que disent nos clients

From lash growth to skin texture — here's what changed when they switched to pure oil.De la croissance des cils à la texture de la peau — voici ce qui a changé avec l'huile pure.

4.9 / 5 Verified ReviewsAvis vérifiés 20,000+ Canadian Households20 000+ foyers canadiens
Pure Castor OilHuile de ricin pure

“Six weeks of nightly application with a clean spoolie. My upper lashes are visibly longer and thicker — my esthetician noticed before I said anything. I've tried lash serums that cost $80. This $16 bottle outperformed all of them.”“Six semaines d'application chaque soir avec un goupillon propre. Mes cils supérieurs sont visiblement plus longs et plus épais — mon esthéticienne l'a remarqué avant que je dise quoi que ce soit. Ce flacon à 16$ les a tous surpassés.”

4/18/2026
SL
Sophie L.
Verified PurchaseAchat vérifié
VERIFIEDVÉRIFIÉ
Pure Castor OilHuile de ricin pure

“Bought it for my lashes but ended up using it on my cracked heels every night. Two weeks and the deep cracks that bled all winter have closed up. Simple and it works.”“Achetée pour mes cils, mais j'ai fini par l'utiliser sur mes talons craquelés chaque soir. Deux semaines et les fissures profondes qui saignaient tout l'hiver se sont refermées. Simple et efficace.”

1/30/2026
JT
Julie T.
Verified PurchaseAchat vérifié
VERIFIEDVÉRIFIÉ
Pure Jojoba OilHuile de jojoba pure

“I have acne-prone skin and every face oil I tried clogged my pores within a week. Zero new breakouts after four months of daily use. My skin looks calmer and less red overall.”“J'ai la peau acnéique et chaque huile bouchait mes pores en une semaine. Zéro nouvelles éruptions après quatre mois d'utilisation quotidienne. Ma peau semble plus calme et moins rouge.”

2/4/2026
DR
Danielle R.
Verified Purchase • Gatineau, QCAchat vérifié • Gatineau, QC
VERIFIEDVÉRIFIÉ
Pure Jojoba OilHuile de jojoba pure

“Fine, frizzy hair — most oils make it flat and greasy. Four drops on towel-dried ends and the frizz is gone without any heaviness. Scalp flaking has stopped completely too.”“Cheveux fins et frisés — la plupart des huiles les rendent plats. Quatre gouttes sur les pointes et les frisottis disparaissent sans aucune lourdeur. La desquamation du cuir chevelu a aussi complètement arrêté.”

4/11/2026
ST
Sophie T.
Verified Purchase • Sherbrooke, QCAchat vérifié • Sherbrooke, QC
VERIFIEDVÉRIFIÉ
Pure Almond OilHuile d'amande pure

“I use this as my daily moisturizer after the shower. My skin has never been softer and it absorbs so quickly — no greasy feeling at all.”“Je l'utilise comme hydratant quotidien après la douche. Ma peau n'a jamais été aussi douce et ça absorbe tellement vite — aucune sensation grasse.”

3/15/2026
ML
Marie-Claude L.
Verified PurchaseAchat vérifié
VERIFIEDVÉRIFIÉ
Rosehip Face OilHuile visage églantier

“I was using a department-store rosehip serum that cost three times as much. This absorbs faster, does not leave a film, and my skin texture has genuinely improved after six weeks.“J'utilisais un sérum d'églantier de grands magasins qui coûtait trois fois plus cher. Celui-ci s'absorbe plus vite, ne laisse pas de film, et ma texture de peau s'est vraiment améliorée après six semaines.

3/14/2026
CM
Catherine M.
Verified PurchaseAchat vérifié
VERIFIEDVÉRIFIÉ
Rosehip Face OilHuile visage églantier

“I have rosacea and most face oils make the redness worse. The hemp seed and squalane calm everything down. No fragrance, nothing that triggers a flare. Four months in, baseline redness is noticeably lower.”“J'ai de la rosacée et la plupart des huiles aggravent les rougeurs. Le chanvre et le squalane calment plutôt qu'aggraver. Aucun parfum, rien qui déclenche une poussée. Après quatre mois, mes rougeurs sont nettement réduites.”

4/2/2026
SR
Sophie R.
Verified PurchaseAchat vérifié
VERIFIEDVÉRIFIÉ
Argan OilHuile d'argan

“Thick, curly hair that frizzes the second I step outside. One drop on each side and my curls hold their shape all day without that crunchy silicone feel. I was spending $40 on serums with dimethicone. This is just argan oil and it works better.”“Cheveux épais et bouclés qui frisottent dès que je sors. Une goutte de chaque côté et mes boucles gardent leur forme toute la journée sans le toucher croquant du silicone. Je dépensais 40$ pour des sérums au diméthicone. C'est juste de l'argan et ça fonctionne mieux.”

3/22/2026
JL
Jade L.
Verified Purchase • Toronto, ONAchat vérifié • Toronto, ON
VERIFIEDVÉRIFIÉ
Argan OilHuile d'argan

“Replaced my $35 serum — same results or better. My skin is hydrated, forehead lines less visible, and no breakouts. At this price for 30ml of pure cold-pressed argan, it's a no-brainer.”“A remplacé mon sérum à 35$ — mêmes résultats ou meilleurs. Ma peau est hydratée, rides du front moins visibles, et pas de boutons. À ce prix pour 30ml d'argan pure, c'est une évidence.”

2/8/2026
EK
Emma K.
Verified Purchase • Ottawa, ONAchat vérifié • Ottawa, ON
VERIFIEDVÉRIFIÉ
Pure Almond OilHuile d'amande pure

“Great carrier oil for essential oil blends. The quality is obvious — you can tell it's cold-pressed by the light nutty scent. Way better than pharmacy brands.”“Excellente huile de base pour les mélanges d'huiles essentielles. La qualité est évidente — on sent que c'est pressé à froid par le léger arôme de noix. Bien mieux que les marques de pharmacie.”

1/12/2026
DR
David R.
Verified PurchaseAchat vérifié
VERIFIEDVÉRIFIÉ

Before you compare pricesAvant de comparer les prix

Your $60 serum isn’t what you think.Votre sérum à 60$ n'est pas ce que vous pensez.

Compare what's actually in the bottle — not the price tag, not the packaging, not the marketing. Four things to know before buying any oil or serum. Comparez ce qu'il y a vraiment dans le flacon — pas le prix, pas l'emballage, pas le marketing. Quatre choses à savoir avant d'acheter toute huile ou sérum.

01

60% Are Diluted

60% of carrier oils tested on Amazon showed evidence of dilution with mineral oil or synthetic extenders (NOW study, 2026).60% des huiles de base testées sur Amazon ont montré des signes de dilution avec de l'huile minérale ou des agents synthétiques (étude NOW, 2026).

02

Silicone First

The “hero ingredient” on luxury labels? Listed last at 0.1%. First ingredient: dimethicone — a silicone that coats but never absorbs.L'ingrédient « vedette » sur les étiquettes luxe ? Listé en dernier à 0,1%. Premier ingrédient : le diméthicone — un silicone qui couvre sans absorber.

03

$6 to Make, $60 to Sell

A product considered “very expensive” to manufacture costs $6 per unit. The rest is packaging, retail margin, and marketing.Un produit considéré « très cher » à fabriquer coûte 6$ par unité. Le reste est emballage, marge de détail et marketing.

04

Hexane Extracted

If the label doesn’t say “cold-pressed,” it was likely extracted with hexane — a petroleum solvent that leaves trace residues.Si l'étiquette ne dit pas « pressé à froid », l'huile a probablement été extraite à l'hexane — un solvant pétrolier qui laisse des résidus.

Pure Castor Oil
THE SCIENCELA SCIENCE
Pure Castor OilHuile de ricin pure
90% RICINOLEIC ACID

Why this oil worksPourquoi cette huile fonctionne

A fatty acid found in no other plant oil.Un acide gras introuvable dans aucune autre huile.

Castor oil is 90% ricinoleic acid — a compound that triggers prostaglandin E2 receptors in hair follicles. The same pathway targeted by prescription lash serums, without the synthetic chemicals or the $80 price tag.L'huile de ricin est composée à 90% d'acide ricinóléique — un composé qui active les récepteurs de prostaglandine E2 dans les follicules pileux. La même voie ciblée par les sérums sur ordonnance, sans les produits chimiques ni le prix de 80$.

This is why castor oil does things no other carrier oil can: lash growth, brow regrowth, thick skin repair, scalp treatment.C'est pourquoi l'huile de ricin fait ce qu'aucune autre huile ne peut : croissance des cils, repousse des sourcils, réparation de peau épaisse, traitement du cuir chevelu.

Key Compound: 90% Ricinoleic AcidComposé clé : 90% d'acide ricinóléique

Full ingredient listListe complète des ingrédients

One ingredient. Full INCI.Un seul ingrédient. INCI complet.

No fillers, no fragrance, no preservatives. Read ours — then read theirs.Sans agents de remplissage, sans parfum, sans conservateurs.

INCI

Ricinus Communis (Castor) Seed Oil

Cold-pressed castor oil — 90% ricinoleic acidHuile de ricin pressée à froid — 90% d'acide ricinóléique

Every Sampson oil is cold-pressed, hexane-free, and bottled in Montreal, Quebec.Chaque huile Sampson est pressée à froid, sans hexane, et embouteillée à Montréal, Québec.

How we compareComment nous nous comparons

Sampson vs. The AlternativesSampson vs. les alternatives

FeatureCaractéristique Sampson Pure OilHuile pure Sampson Amazon “Pure” OilHuile « pure » Amazon Dept. Store SerumSérum grands magasins
PurityPureté100% — one ingredient100% — un ingrédient60% fail purity tests60% échouent les testsHero oil listed lastHuile vedette en dernier
ExtractionExtractionCold-pressed, hexane-freePressé à froid, sans hexaneOften hexane-extractedSouvent à l'hexane
First Ingredient1er ingrédientThe actual oilL'huile elle-mêmeOften carrier fillerSouvent un diluantDimethiconeDiméthicone
IngredientsIngrédients13 – 820 – 40+
Price (120ml)Prix (120ml)$15.95$12 – $25$40 – $80+
FounderFondateurEnv. Engineer, M.Eng.Ing. environnement, M.Ing.White-labelMarque blancheMarketing teamÉquipe marketing
Made InFabriquéMontreal, CanadaMontréal, CanadaVaries (mass)Variable (masse)Varies (factory)Variable (usine)
Diana Trasente and Angelo Diadelfo, environmental engineers and founders of Sampson Eco Shop
EST. 2010
Diana Trasente & Angelo Diadelfo
M.Eng. · Environmental Engineers

Why SampsonPourquoi Sampson

Curated by science. Not marketing.Sélectionné par la science. Pas le marketing.

Diana and Angelo spent 25+ years cleaning up contaminated soil and water as environmental engineers. They know what chemicals do to the body — because they spent their careers measuring the damage.Diana et Angelo ont passé plus de 25 ans à assainir les sols et les eaux contaminés en tant qu'ingénieurs en environnement. Ils savent ce que les produits chimiques font au corps — parce qu'ils ont passé leur carrière à en mesurer les dommages.

When they turned that same analytical framework on personal care products, what they found was worse than expected: silicones as hero ingredients, petroleum-derived fillers, and “pure” oils diluted with synthetics. Every Sampson oil passes the same standard they applied to environmental remediation.Quand ils ont appliqué ce même cadre aux produits de soins, ce qu'ils ont trouvé était pire que prévu : des silicones comme ingrédients vedettes, des agents pétroliers, et des huiles « pures » diluées. Chaque huile Sampson passe le même standard que la décontamination.

M.Eng. CredentialsDiplôme M.Ing. Cold-Pressed & Hexane-FreePressé à froid, sans hexane Made in MontréalFabriqué à Montréal Cruelty-Free & VeganSans cruauté et végétalien

Frequently askedQuestions fréquentes

Before you apply.Avant d'appliquer.

Will castor oil really make my lashes grow?L'huile de ricin fait-elle vraiment pousser les cils ?

Ricinoleic acid triggers prostaglandin E2 receptors in hair follicles, promoting growth. Most customers see visible results on lashes and brows in 4–6 weeks of nightly application with a clean spoolie.L'acide ricinóléique active les récepteurs de prostaglandine E2 dans les follicules pileux. La plupart des clients voient des résultats visibles en 4–6 semaines d'application nocturne.

Why is castor oil so thick?Pourquoi l'huile de ricin est-elle si épaisse ?

The 90% ricinoleic acid content gives it naturally thick viscosity. This is a sign of purity — diluted castor oils feel thinner. For hair or scalp, mix 50/50 with our jojoba oil.La teneur de 90% en acide ricinóléique lui donne sa viscosité naturellement épaisse. C'est un signe de pureté. Pour les cheveux, mélangez 50/50 avec notre huile de jojoba.

Can I use it on my scalp?Puis-je l'utiliser sur le cuir chevelu ?

Yes. Massage into the scalp once a week as a pre-shampoo treatment. Leave 20–30 minutes, then wash out. Mix with jojoba if too thick.Oui. Massez le cuir chevelu une fois par semaine avant le shampooing. Laissez 20–30 minutes, puis lavez. Mélangez avec du jojoba si trop épais.

How do I know this is really pure?Comment savoir si c'est vraiment pur ?

INCI is one line: Ricinus Communis Seed Oil. Pure castor oil is thick with a faint nutty scent. Diluted versions pour like water and are odourless. We cold-press without hexane in Montreal.L'INCI ne fait qu'une ligne. L'huile pure est épaisse avec un léger arôme de noix. Les versions diluées coulent comme de l'eau. Pressée à froid sans hexane à Montréal.

Will this clog my pores?Est-ce que cela bouchera mes pores ?

Comedogenic rating 1 (very low). Best for targeted use — lashes, brows, dry patches. For daily full-face oil, try our jojoba (rating 2) or argan (rating 0).Indice comédogène 1 (très bas). Idéal pour application ciblée. Pour le visage quotidien, essayez notre jojoba (2) ou argan (0).

What's the shelf life?Durée de conservation ?

12+ months stored cool and dark. Dark bottle protects against UV degradation.12+ mois dans un endroit frais et sombre. Le flacon foncé protège contre la dégradation UV.

The CollectionLa collection

Find Your OilTrouvez votre huile

Six oils, each for a different need — five single-ingredient, one blend. Start with one.Six huiles, chacune pour un besoin différent — cinq à ingrédient unique, un mélange.