Best Seller
Castor Hair Oil
Best Seller
Castor Hair Oil
Strengthening castor oil grows thick hair, lashes & brows. Pure, cold-pressed for maximum potency from Amazon.
- Strengthening healthy hair growth
- Nourishing scalp and roots
- Helping with graying
- Repairing split ends and reducing frizz
Free From
Parabens
Sulfates
Synthetic Fragrances
Phthalates
Complete Your Ritual
Rosemary Shampoo
Lifts buildup so actives reach follicles more effectively
$32
Rosemary Conditioner
Nourishes after cleansing to reduce breakage and dryness
$32
Non-toxic & Effective
What You’ll Notice
Finally, hair that grows stronger and thicker
Ricinoleic acid, omega-6 and essential fatty acids accelerate blood circulation to the scalp and increase hair growth naturally.
Nourish scalp and strengthen roots
Rich protein, minerals and vitamin E help fortify hair and nourish the scalp while restoring shine and texture.
Reduce frizz and prevent split ends
Fills damaged gaps in keratin and increases tensile strength while humectant qualities retain moisture to prevent premature graying.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
The Science
How Castor Oil Works
Research shows castor oil's ricinoleic acid content supports hair growth by improving circulation, strengthening follicles, and providing essential nutrients.
Mechanism Evidence
Ricinoleic acid circulation
Ricinoleic acid in castor oil helps improve blood circulation to the scalp, delivering more oxygen and nutrients to hair follicles for healthier growth.
Published Study: Gad et al., 2021, Polymers
Lab Evidence
Protein and mineral content
Castor oil is rich in proteins, minerals, and vitamin E that help fortify hair strands and nourish the scalp for stronger, healthier hair.
Published Study: Gad et al., 2021, Polymers
Model Evidence
Keratin protection
The oil fills damaged gaps in keratin and increases tensile strength, making hair less prone to splitting and breakage.
Published Study: Gad et al., 2021, Polymers
Clinical Study
Humectant properties
Castor oil's humectant qualities help hair retain moisture, which may help prevent premature graying and maintain hair health.
Published Study: Gad et al., 2021, Polymers
Systematic Review
Anti-inflammatory effects
Studies show castor oil has anti-inflammatory properties that can help soothe scalp irritation and reduce inflammation.
Published Study: Gad et al., 2021, Polymers
Lab Evidence
Essential fatty acids
Omega-6 and essential fatty acids in castor oil provide the building blocks needed for healthy hair growth and maintenance.
Published Study: Gad et al., 2021, Polymers
*Educational overview; not medical claims. Individual results vary.
Our Unique Process
In-House Infusion. Fresh Batches.
Intentional, small-batch infusion for guaranteed quality & freshness.
Volcanic Soil Origins
Ecuador’s unique soil, sun, rain and altitude create the perfect conditions for growing resilient and nutrient-rich botanicals, the perfect stars for our potent hair and skin care products.
Harvesting & Small-Batch Infusion
Made frequently in small batches and bottled fresh to maintain potency. No synthetics and no long warehouse time.
Fresh & Made to Order
We bottle each product by hand and purposely craft small batches, ensuring the highest quality and freshness for each and every customer.
Simple Ritual
How to Use for Best Results
Apply a few drops to scalp OR ends, massage, leave in, then cleanse if needed.
01
Apply to Scalp OR Ends
Part hair and place 3 to 5 drops on the scalp, focusing on sparse areas, OR apply to hair ends for conditioning.
When: Evening, 2–3x per week
02
Massage Gently
Use fingertips in small circles to boost circulation.
Duration: 2–3 minutes
03
Leave In
Let it absorb while you sleep. Fine hair can use fewer drops.
Leave for: 6–8+ hours
04
Wash & Style
Shampoo in the morning. Double-cleanse if needed. Style as usual.
Next morning: Regular routine
*Disclaimer: Always do a patch test first to ensure you are not allergic to any of the ingredients. If you are under any medication or suffering from any health condition, consult your doctor before starting any new natural remedy. Results may vary from person to person.
Pure & Potent
Key Ingredients
Pure, natural ingredients that actually work.
Over
133,441
Choose Allpa
Make the simple switch to natural,
non-toxic care and feel the difference.
"Been using both Rosemary and Castor oil 2 times a week for hair and scalp treatment . I notice fewer hair on my hairbrush after brushing my hair. My hair looks shiny and health after application. I'm using castor oil on my brows too."— Estela B.
"Nice way to moisturize your hair and scalp. Feels good and smells nice too."— Joshua J.
"Good"— Muhammad A.
"I love this product"— Katarina J.
"I just love this business! Never have I been disappointed. I am a customer for life! 💜"— Nichole R.
In the Press
Editor Approved, Community Loved
Our Customers
What they're saying
* Every review you see here is submitted by real customers, sharing their honest opinions and personal experiences with our products. At Allpa Botanicals, we are committed to providing honest and unedited feedback to help you make informed decisions.
Frequently Asked Questions
Everything you need to know about our Castor Hair Oil
Start with 3–5 drops for the scalp or 1–3 for mid-lengths and ends. Add one drop at a time if more slip is needed.
Use 2–3 times per week for best results. Apply in the evening and leave on overnight for maximum absorption.
Yes! This oil works for all hair types. Fine hair should use fewer drops, while thick or coarse hair may need more for full coverage.
Most users notice softer, smoother hair after 2–3 uses. Hair growth improvements typically become visible after 4–6 weeks of consistent use.
Yes, this oil works well with most hair care routines. Apply before styling products, and it can be used alongside other treatments.
No, this oil absorbs quickly and doesn't leave a greasy residue. Start with a small amount and adjust based on your hair's needs.
Yes! Castor oil is safe for colored and chemically treated hair. It actually helps restore moisture and shine that may be lost during chemical processes.
Store in a cool, dry place away from direct sunlight. Keep the bottle tightly closed. The oil will last 2–3 years when stored properly.