Hair · Lashes · Brows

Castor Oil

Name: Cold-Pressed Castor Oil
Brand: Brewoil
SKU: BWC-300
Price: 1099 INR
Availability: InStock

Ricinus communis · Single ingredient · Gujarat, India origin

Cold-Pressed 100% Pure Lab COA Available Vegan & Cruelty-Free

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Size

300 ml

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Extraction: Mechanical cold-press, <40°C, no chemical solvents
Origin: Mehsana district, Gujarat — India accounts for 75%+ of global castor production; the Gujarat castor belt is the highest-yield region within India
Batch tested: NABL-accredited lab · current batch BWC-2605-A21
Packaging: HDPE food-grade bottle with flip-top dispenser

COA

Lab Report AvailableBatch BWC-2605-A21 · Tested 02 May 2026 · By Eurofins India

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About this oil

Castor is one of the most-studied carrier oils in cosmetic chemistry. Its unique fingerprint: 87% ricinoleic acid — a fatty acid that exists almost nowhere else in nature. This single compound is what gives castor its thick, slow-spreading texture and its reputation for hair growth, lash density, and deep joint penetration.

Fatty Acid Profile

What's inside

The Composition

Every carrier oil has a fingerprint — the specific fatty acids in specific ratios. This is ours.

Component	Range	What It Does
Ricinoleic acid (C18:1-OH)	85–90%	unique to castor — drives every benefit
Oleic acid (C18:1)	3–5%	standard monounsaturated
Linoleic acid (C18:2)	3–5%	omega-6, anti-inflammatory
Stearic acid (C18:0)	1–2%	helps emulsification
Palmitic acid (C16:0)	1%	saturated, conditioning

Real Benefits

What it does

For Your Skin, Hair & Body

Not marketing claims — actual mechanisms.

Hair Growth Support

Ricinoleic acid stimulates the dermal papilla cells at the follicle base. Studies show consistent topical use over 8–12 weeks correlates with reduced shedding and stronger root attachment — not 'new follicle creation' (no oil does that), but real strengthening.

Lash & Brow Density

Castor is the original ingredient in early commercial lash serums. It conditions existing hair, reduces breakage at the lash line, and adds visible thickness over 4–8 weeks of nightly application.

Deep Joint Care

Castor's molecules are large enough to penetrate skin and small enough to reach surface tissue. Used in Ayurveda for joint and muscle massage. Anti-inflammatory via ricinoleic acid's prostaglandin-blocking action.

Skin Barrier Sealing

Its high viscosity creates an occlusive layer that locks in moisture — ideal for very dry skin, eczema-prone areas, or post-procedure healing.

Antimicrobial

Ricinoleic acid is naturally antibacterial and antifungal — one reason it shows up in traditional wound-care formulations.

DEEP USE

In Practice

How to Actually Use It

Knowing what an oil does is one thing — knowing exactly how to use it is what gets results. Here is the full playbook.

Scalp + hair growth treatment

Massage 2 tbsp into scalp 1–2× per week. Leave 30 min to overnight (wrap hair), then shampoo out. Best paired with a lighter oil (jojoba/almond) 1:1 to dilute.

Lash treatment

Dip a clean mascara wand in castor, wipe excess on rim, brush onto upper and lower lash line at night. Sleep — wash off in morning. Visible difference at 4–6 weeks.

Brow shaping

Apply with a spoolie before bed, every night for 6–8 weeks. Combines well with vitamin E for faster results.

Beard conditioning

5–8 drops worked into beard and the skin underneath. Best at night so the thicker texture isn't an issue during day.

Joint massage

Warm 1 tbsp castor, massage into joint area for 3–5 minutes. Cover with cotton cloth and a hot water bottle for 15 min.

Dry cuticle treatment

1 drop per cuticle nightly. Heals split nail beds within a week.

The Honest View

Who it's

For — and Who It Isn't

Best for

Hair-focused customers, lash and brow density seekers, anyone with very dry skin or scalp, beard growers, joint massage users. Vegan and cruelty-free.

Caution / Avoid if

Brewoil Castor is cosmetic-grade — DO NOT INGEST. Pregnant women: do not use orally without doctor approval (oral castor can trigger labor). Topical use during pregnancy is safe but check with doctor. Avoid direct contact with eyes — use spoolie carefully on lashes.

Care & Keeping

Storage

& Shelf Life

Shelf Life

24 months unopened. 18 months after opening if stored properly.

Storage

Cool, dark place. Castor is one of the more shelf-stable oils — does not need refrigeration but keep capped to prevent dust contamination of dispenser.

Our sourcing

Where This Oil Comes From

Brewoil castor comes from Mehsana, Gujarat — India's castor heartland, which produces 75%+ of the world's castor oil. We source from farmers practicing rotation with green-manure crops (improves soil + reduces fertilizer dependence). Seeds are pressed within 4 months of harvest; cold-press temperature stays under 38°C to preserve the golden color and full ricinoleic acid profile.

FAQ

Questions

People Actually Ask

Will castor oil really grow new hair?

It supports the conditions for hair growth — better follicle attachment, less breakage, stronger roots — but no carrier oil makes new follicles where none exist. Use realistically: 1–2 times per week, scalp massage, for 8–12 weeks before judging results.

How is your castor different from chemist-shop castor?

Most chemist-shop castor is laxative-grade refined castor — bleached, deodorized, intended for oral use as a laxative. Ours is cold-pressed cosmetic-grade — golden colored, with the full ricinoleic acid + natural antioxidant profile intact. Different oil, different purpose.

Is it greasy / can I sleep with it on?

Castor is one of the thicker carrier oils. For overnight scalp use, dilute 1:1 with a lighter oil (jojoba, sweet almond) and tie hair up in a satin scarf. For lashes/brows, the small amount on a spoolie doesn't cause pillow transfer.

How long until I see results?

Most visible change shows up at 6–8 weeks of consistent 1–2× per week scalp massage. Lash and brow density: 4–8 weeks. Patience is part of the protocol.

Can I use it for lashes if I wear extensions?

No — any oil will dissolve the adhesive on lash extensions. Wait until extensions are removed.

Frequently Asked

Does castor oil really grow hair?+

It thickens existing hair and reduces breakage via ricinoleic acid. New hair growth comes from rosemary EO.

How often to apply?+

2-3 times per week max. Daily oiling can over-occlude the scalp.

Will it stain pillowcases?+

Yes if applied thickly. Wash sheets in cold water; use overnight on cotton-covered pillow.

Castor for lashes — safe?+

Yes, diluted 50/50 with jojoba. Wash off pooled oil in morning to avoid styes.

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300ml · ₹1099 · Free shipping over ₹999

Castor Oil

The Composition