Search  for anything...

Kate Blanc Cosmetics Castor Oil Organic for Hair, Lashes, Face, Skin (4oz)

  • Based on 118,067 reviews
Condition: New
Checking for the best price...

Buy Now, Pay Later


As low as $3 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: 15 left in stock
Fulfilled by Amazon

Arrives Wednesday, Oct 21
Order within 6 hours and 36 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

Size: 4 Fl Oz (Pack of 1)


Features

  • PURE AND USDA CERTIFIED ORGANIC CASTOR OIL: Kate's Organic Castor Oil is known for its purity and organic ingredient; commonly used in beauty routines to condition and support the appearance of fuller-looking brows, especially those that appear sparse or over-tweezed.
  • CONDITIONS EYEBROWS & LASH LINE: Condition and moisturize the look of brows and lashes with this plant-based oil; use the included dropper to apply a small amount to brows and along the lash line (for external use only).
  • THICK NATURAL HAIR OIL FOR DRY, DAMAGED HAIR: Hexane-free Castor Oil conditions to soften brittle strands, support a healthier-looking scalp, and create the appearance of fuller, more voluminous hair. Use as a deep conditioning treatment or scalp massage oil for visibly smoother, shinier results
  • FACE & BODY MOISTURIZER FOR SOFT, GLOWING SKIN: Apply daily to lock in hydration and support softer, smoother-looking skin texture; this nourishing oil forms a protective barrier that keeps skin supple and radiant without feeling greasyperfect for face, cuticles, elbows, and rough patches.
  • COLD PRESSED & USDA ORGANIC CERTIFIED: Third-party tested for purity and safety, packaged in protective glass in accordance with FDA cosmetic regulations; cold-pressed extraction helps preserve natural nutrients for lashes, brows, hair, and skin

Description

Kate Blanc’s Organic Castor Oil is a versatile beauty oil that conditions and moisturizes lashes, brows, and hair for a softer, healthier-looking appearance. Apply a tiny amount before bedtime to support the natural look and feel of lashes and brows. This item comes with an eyelash and eyebrow applicator kit for targeted, mess-free application to lash lines and brow areas. The included glass dropper allows for easy, precise dispensing on nails, scalp, or hair. Kate Blanc’s Organic Castor Oil is a rich, cold-pressed oil known for its deeply moisturizing and softening properties. Ideal for dry or brittle hair, this natural oil helps smooth strands and reduce the appearance of frizz for a healthier-looking finish. Hydrates & Conditions: Apply a few drops directly to the scalp to moisturize and soften dry areas. With regular use, castor oil can help maintain a nourished scalp and promote the appearance of shiny, refreshed hair. SAFETY WARNING: For external use only. Avoid contact with the eyes because it may cause irritations. Rub a very small amount on the inside of your elbow area to test for any allergic reaction before use. Keep out of the reach of children. If pregnant, consult with your health care provider before use. This product is not intended to diagnose, mitigate, treat, cure or prevent any disease. Our facility is located in California. We comply with the highest manufacturing standards to ensure that all of our products are top quality. Kate uses natural ingredients in her products without the harmful chemicals that damage our well-being and our environment. Her motto is if she cannot pronounce the ingredient, she won't use it in her products. Castor Oil Neem Oil Jojoba Oil Rosehip Oil Argan Oil Vitamin E Oil About Us We are dedicated to bringing you our best oils for your beauty needs. From cold-pressed organic oils to carefully sourced everyday staples, our collection of oils is perfect for every routine and skin type. Kate aims to use plant-based and natural ingredients in her products. Her motto is that if she cannot pronounce the ingredient, she won't use it in her products.

Package Dimensions ‏ : ‎ 5.67 x 2.17 x 2.17 inches; 4 ounces


Item model number ‏ : ‎ 4oz-Castor-Child-Part


UPC ‏ : ‎


Manufacturer ‏ : ‎ Kate Blanc Cosmetics


Best Sellers Rank: #478 in Beauty & Personal Care (See Top 100 in Beauty & Personal Care) #3 in Hair Treatment Oils


#3 in Hair Treatment Oils:


Customer Reviews: 4.5 4.5 out of 5 stars (118,067)


Brand Name: Kate Blanc Cosmetics


Age Range Description: Adult


UPC: 703255270227 810002444357


Manufacturer: Kate Blanc Cosmetics


Model Number: 4oz-Castor-Child-Part


Manufacturer Part Number: 4oz-Castor-Child-Part


Scent Name: Unscented


Item Form: Oil


Active Ingredients: Organic Castor Oil


Hair Type: All


Item Weight: 4 ounces


Number of Items: 1


Item Volume: 4 fluid ounces


Unit Count: 4 Fluid Ounces


Material Type Free: Hexane Free, Paraben Free, Sulfate Free


Recommended Uses For Product: Moisturize Skin and Hair


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Oct 21

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • No clinical proof that it promotes lash/brow growth, but has other multi-use skincare benefits
Size: 2 Fl Oz (Pack of 1)
When I was a teen, friends would use castor oil in the belief that it would improve lash and brow length and thickness. But they were always applying too much and getting it in their eyes, so I'd never tried it myself. As it turns out, there's zero clinical evidence to support claims that castor oil promotes lash or brow growth/thickness. For that, Latisse or the same but much more affordable Careprost works wonders.) But if some see that improves their brows and lashes, then science aside, that's what's most important. I can't say that using it has led to thicker brows, but I've noticed that my brows are much better behaved, with no more "rogue" hairs shooting off in unwanted directions. I bought this castor oil because I saw a skincare video claiming that using it around the eyes (sparingly) at night resulted in smoother, less puffy eyes in the morning. I was very doubtful because castor oil is an occlusive, which means it holds in fluid. And because fluid accumulation around the eyes is what causes puffiness, I was perplexed as to why applying castor oil to the skin around the eye area wouldn't result in waking up with massively puffy eyes. (Anyone who's ever resorted to using petroleum jelly -- also an occlusive -- around their eyes can probably attest to waking up with fluid-filled eye bags, even if you're young and have a firmer under-eye area.) But for some reason, gently tapping a small amount of castor oil around the eyes at night really does work. At least for me, and apparently for the woman who creates the skincare advice videos. (She also uses it on her neck and decolletage.) I tend to be a natural skeptic, so I was shocked (happily so) at the results. After using at night (over my gentle retinol eye cream/gel), I wake up in the morning with smoother, more rested and definitely un-puffy eyes. Go figure. For me, it wasn't so effective as a cuticle softener/moisturizer, but I have an excellent hand treatment for that, so that wasn't a downside. Castor oil offers lots of other benefits, making it a good, multi-use oil to keep on hand. But again, the one thing the science says it won't do is promote lash or brow growth. What it does do is condition them, making them appear glossy and healthy and feel a bit thicker, and that's no small thing. But be very careful if applying with the included spoolie brush, as it's very easy to get the oil into your eyes when using on lashes. I press a piece of lint-free paper towel on the brush to blot any oil excess before using. Because this oil is very thick, if it gets into your eyes, it can take a while to clear. This is an excellent product, and I appreciate that it's organic, and that both a spoolie and a very fine eyeliner-type brush are included. The dropper tip opening is larger than most because this oil is so thick, so you'll want to go easy, as even if just letting it drip out, it releases a lot of oil. ... show more
Reviewed in the United States on June 14, 2026 by Marinite

  • AMAZING!!! LO MEJOR!!!
Size: 2 Fl Oz (Pack of 1)
⭐⭐⭐⭐⭐ I bought this castor oil hoping it would help fill a small bald spot in my eyebrow, and I’m honestly impressed. I started noticing new hair growth in about two weeks, and in less than a month the spot was almost completely filled in. I applied it every morning and every night, and sometimes I also used a little on my eyelashes. I did notice that using it on my lashes during the day sometimes made my vision a little blurry because the oil would get into my eyes, so I stopped applying it during the day and only used it at night. Personally, this worked much better for me than all the expensive eyebrow growth serums with fancy marketing. It’s simple, affordable, and gave me real results. Of course, everyone’s experience may be different, but it definitely worked for me, and I will absolutely repurchase it. ... show more
Reviewed in the United States on June 28, 2026 by Anyelina Santaella

  • Hair is growing back
Size: 2 Fl Oz (Pack of 1)
If you're looking for an all-natural, versatile beauty product, Kate Blanc Cosmetics Castor Oil might just be the answer. This USDA Certified Organic, 100% pure, cold-pressed, and hexane-free castor oil comes in a 2oz bottle, making it a perfect starter kit for anyone wanting to explore natural hair and skin treatments. Hair and Eyebrow/Eyelash Growth: The oil claims to stimulate hair growth, and many users have reported positive results for their hair, eyelashes, and eyebrows. The product is rich in nutrients, particularly ricinoleic acid, which is known for its ability to improve circulation to hair follicles, thereby promoting healthier and thicker growth. Many have noticed fuller, darker lashes and more defined eyebrows after a few weeks of use, particularly when applied regularly with the included brush applicator. Skin Moisturizer: As a moisturizer, the oil is incredibly hydrating, making it a great option for dry skin. It absorbs relatively quickly and leaves skin feeling soft and smooth without feeling greasy. Some users also note that it helps with skin conditions like acne, scars, and stretch marks, though it's always important to do a patch test first. Ease of Use: The included dropper is convenient for precise application, and the formula itself has a mild scent that fades quickly. Since the oil is cold-pressed and hexane-free, it retains many of its beneficial properties, making it ideal for those who want to avoid harsh chemicals. Final Thoughts: Overall, Kate Blanc Cosmetics Castor Oil is a fantastic multi-purpose product that is effective for both hair and skin care. It’s an affordable, organic, and reliable choice for anyone looking to boost their beauty routine with a natural product. Whether you're looking to enhance your lashes, nurture your hair, or moisturize your skin, this oil is a great addition to your collection ... show more
Reviewed in the United States on February 9, 2024 by Deepthi

  • Castor oil with the correct packaging!
Size: 2 Fl Oz (Pack of 1)
Great quality, I use in combo with the Kate Blanc rosehip seed oil and my face feels hydrated, the spots are almost completely gone and my skin looks smooth. A little goes a long way with this castor oil, it also has helped my lash growth.
Reviewed in the United States on July 16, 2026 by Laura Gracia

  • Buy it
Size: 16 Fl Oz (Pack of 1)
I been using this product for over a year now and it grows my hair. It’s thick and oily and I love it!!!!! Buy it I recommend it!
Reviewed in the United States on August 19, 2026 by Serena L Franklin

  • You need a pump
Size: 4 Fl Oz (Pack of 1)
love the product, however for my application, i did find a better solution for Castor Oil, that dropper you have is so messy, i found a larger size , made the exact same way, but with a pump for easier dispensing
Reviewed in the United States on August 10, 2026 by Richard Stromberg

  • My results
Size: 2 Fl Oz (Pack of 1)
I bought this product because someone on YouTube said that she had been using it for six years for eyelash growth, and she did indeed have exceptionally long and beautiful eyelashes. (She has written her own review, and as of my writing this, it is the top review here). I knew going in that this would be a long-term project and I would have to be patient to see results, so I wasn't discouraged when I wasn't noticing any difference after one month. I should mention at this point that I was not only using the castor oil on my eyelashes, but also on my eyebrows, as well as around my hairline (especially at my temples). For my eyelashes, I put one good-sized drop on my fingertip, press my other fingertip to it, so that I have half a drop per hand, and then massage it into the roots of my top and bottom lashes. Then I apply another drop to my finger, redistribute it as before, and massage it into the roots of my eyebrows. I do this before bed, because it does make your eyes feel sticky and weird. For my hair, I follow this procedure on nights before I'm going to wash my hair the next morning, which for me is twice a week: I put about two half dropperfuls of castor oil in the palm of one hand, add 14-16 drops of rosemary essential oil (which has been shown to be AS EFFECTIVE as Rogaine for hairloss, with none of the side effects, and at a fraction of the cost), and mix them together with a fingertip. Then I use that fingertip to rub it in all around my hairline, going farthest back at my temples where the hair is thinnest. Now I'll tell you my results. I've been doing this for 110 days, not missing a single night for the eyelashes and eyebrows, and doing it consistently before every washing for my hair. The difference that I noticed first was in my eyebrows. They began to fill in and darken up at around the two-month mark. By three months, it was very clear that they were much more defined and full and healthy than before I started. I don't pluck my eyebrows, so I think their thinning and lightening was due to a family history of hypothyroidism, plus just getting older (I'm 38). At around this time I noticed an undeniable difference in my eyelashes too, but it was subtle. Now it's been nearly four months, and my eyelashes are definitely both longer and fuller. This, for me, hasn't been as noticeable as the change to my eyebrows, because my eyelashes are very light-colored at the tips. But I caught a view of them from the side in direct sunlight a few days ago, and I was shocked! They are much longer than ever before. I don't like to wear mascara (because it irritates my eyes) but now I'm tempted to try again, just to let the world appreciate how long my eyelashes are! I feel like a beautiful camel! As for my hair, I'm not really sure what's going on there. I wanted something to help my hair grow, because the hairs around my face are always much shorter and wispier than the rest of my hair (and not in a cute, "baby hairs" kind of way, but in a way that makes me look haggard and unkempt, because of how they stick out and make me look like a mad scientist). These wisps seem to have gotten a bit longer, which is good, but they're still much too short to match the rest of my hair, or stay contained by any hairdo, so for now I'm left looking even rougher than before. I'm going to keep doing what I'm doing, and hope that what I'm seeing is progress, and eventually the wisps will catch up to my other hair. TL;DR - Will this make your eyelashes longer and fuller? YES. Will it make them darker? NOT NECESSARILY. Will it fill in your patchy/abused eyebrows? YES!!! Will you see amazing results in two weeks? NO, you will NOT see any results in two weeks. Will you see results after four months? YES!!! Will you see even greater results after more time? PROBABLY. Do your eyes feel gross and gummy the morning after? YES, but it goes away when you wash your face. ... show more
Reviewed in the United States on May 7, 2022 by Russell Vogel

  • Great Organic Castor Oil – Moisturizes Really Well
Size: 2 Fl Oz (Pack of 1)
I’ve been using the Kate Blanc Cosmetics Organic Castor Oil for my hair and lashes for the past few weeks, and I’m very pleased with the results. What I like most is how well it moisturizes. It penetrates nicely and leaves my hair feeling soft, hydrated, and healthier. I apply it a couple of times a week as a hair mask or add a few drops to my conditioner, and the difference in moisture is noticeable. My hair looks shinier and feels much less dry. I’ve also been using it on my lashes and eyebrows. It feels gentle and nourishing, and I’ve noticed they look a bit fuller and healthier over time. The oil is pure, lightweight enough to apply easily, and has a very mild scent. It absorbs well without leaving a heavy greasy feeling if you use the right amount. If you’re looking for a good organic castor oil that really moisturizes deeply, this one from Kate Blanc Cosmetics is an excellent choice for both hair and lashes. ... show more
Reviewed in the United States on April 18, 2026 by Fer

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...