Castor Oil for Hair Growth: Prices Compared Per Fluid Ounce
Castor oil for hair growth is a popular shopping category, although evidence that it increases growth is lacking. Compare current price per fluid ounce across pure oils, Jamaican black castor oil, rosemary blends, and other hair and scalp formulas. All links go to Amazon.
Prices refreshed as of Jul 18, 2026, 6:55 PM ET.
| Product | Category | Form | Size | Price | $ / unit | Value |
|---|---|---|---|---|---|---|
 GreenIVe 100% Pure Castor Oil, 32 Fl oz GreenIVecold-pressedhexane-freeglass-bottle | Pure cold-pressed castor oil | oil | 32 fl oz | $17.99as of Jul 18, 2026, 6:55 PM ET | $0.56/fl oz | — |
 Organic Castor Oil 16 oz — USDA Certified by Mary Tylor Naturals — Cold Pressed, Hexane Free, 100% Pure and Natural Mary Tylor Naturalsorganiccold-pressedhexane-freeusda-certifiedcheck size info | Organic (USDA) castor oil | oil | 16 fl oz | $9.99as of Jul 18, 2026, 6:55 PM ET | $0.62/fl oz | — |
 Dwaraka Organic Cold Pressed Castor Oil for Digestion, Hair Growth, Skincare and Massages - 16.9 Fl Oz (500 ML) | USDA Organic, Non-GMO, All Natural DWARAKAorganiccold-pressedhexane-freeusda-certifiedunrefined | Organic (USDA) castor oil | oil | 16.9 fl oz | $12.99as of Jul 18, 2026, 6:55 PM ET | $0.77/fl oz | — |
| Jamaican black castor oil | oil | 16 fl oz | $15.99as of Jul 18, 2026, 6:55 PM ET | $1.00/fl oz | — | |
 Zatural Black Castor Oil_100% Pure Tropic Jamaican Black Castor Oil (8 Ounce) Zaturalcheck size info | Jamaican black castor oil | oil | 8 fl oz | $11.99as of Jul 18, 2026, 6:55 PM ET | $1.50/fl oz | — |
| Castor & rosemary oil blends | oil | 5 fl oz | $8.40as of Jul 18, 2026, 6:55 PM ET | $1.68/fl oz | 83 | |
 GreenIVe 100% Pure Castor Oil, 4 Fl oz GreenIVecold-pressedhexane-freeglass-bottle | Pure cold-pressed castor oil | oil | 4 fl oz | $6.99as of Jul 18, 2026, 6:55 PM ET | $1.75/fl oz | — |
| Castor & rosemary oil blends | oil | 8 fl oz | $14.99as of Jul 18, 2026, 6:55 PM ET | $1.87/fl oz | 75 | |
 Bella Terra Oils - Jamaican Black Castor Oil 8 oz - Capturing the Essence of Nature, A Versatile Addition to Your Beauty Routine Bella Terra Oilscold-pressedhexane-freecheck size info | Jamaican black castor oil | oil | 8 fl oz | $14.99as of Jul 18, 2026, 6:55 PM ET | $1.87/fl oz | — |
 Isoplus Black Castor Oil & Coconut Oil 5.25oz LYSMOSKIcheck size info | Other castor hair & scalp blends | oil | 5.25 fl oz | $9.93as of Jul 18, 2026, 6:55 PM ET | $1.89/fl oz | — |
| Other castor hair & scalp blends | oil | 4 fl oz | $7.75as of Jul 18, 2026, 6:55 PM ET | $1.94/fl oz | — | |
 Nutricost Essentials Organic Cold Pressed Castor Oil (8 oz) Nutricostorganiccold-pressedunrefinedcheck size info | Organic (USDA) castor oil | oil | 8 fl oz | $15.95as of Jul 18, 2026, 6:55 PM ET | $1.99/fl oz | — |
| Pure cold-pressed castor oil | oil | 6.7 fl oz | $14.99as of Jul 18, 2026, 6:55 PM ET | $2.24/fl oz | — | |
| Jamaican black castor oil | oil | 4 fl oz | $8.95as of Jul 18, 2026, 6:55 PM ET | $2.24/fl oz | — | |
 NIFEISHI Jamaican Black Castor Oil Organic Cold Pressed Glass Bottle, 4.04 fl oz NIFEISHIorganiccold-pressedunrefinedglass-bottle | Jamaican black castor oil | oil | 4.04 fl oz | $9.49as of Jul 18, 2026, 6:55 PM ET | $2.35/fl oz | — |
| Castor & rosemary oil blends | oil | 4.06 fl oz | $9.99as of Jul 18, 2026, 6:55 PM ET | $2.46/fl oz | 51 | |
| Jamaican black castor oil | oil | 4 fl oz | $9.99as of Jul 18, 2026, 6:55 PM ET | $2.50/fl oz | — | |
| Castor & rosemary oil blends | oil | 6.7 fl oz | $16.95as of Jul 18, 2026, 6:55 PM ET | $2.53/fl oz | 49 | |
| Castor & rosemary oil blends | oil | 6.7 fl oz | $16.95as of Jul 18, 2026, 6:55 PM ET | $2.53/fl oz | 49 | |
 Difeel Premium Castor Plus Argan - Pro-Growth + Hydrating Premium Hair Oil 2.5 oz. Difeelcheck size info | Other castor hair & scalp blends | oil | 2.5 fl oz | $6.89as of Jul 18, 2026, 6:55 PM ET | $2.76/fl oz | — |
 Black Jamaican Castor Oil Original Dark by Okay for Unisex - 4 oz Oil OKAYcheck size info | Pure cold-pressed castor oil | oil | 4 fl oz | $12.99as of Jul 18, 2026, 6:55 PM ET | $3.25/fl oz | — |
| Castor & rosemary oil blends | oil | 4 fl oz | $22.97as of Jul 18, 2026, 6:55 PM ET | $5.74/fl oz | 0 | |
 Natural Riches Organic Castor Oil Roll On - Cold Pressed, Hexane Free, 100% Pure Beauty Blend - 1 fl oz Glass Bottle with Roller Ball Applicator Natural Richesorganiccold-pressedhexane-freeglass-bottle | Organic (USDA) castor oil | applicator | 1 fl oz | $11.25as of Jul 18, 2026, 6:55 PM ET | $11.25/fl oz | — |
 100% Pure Castor Oil - Cold-pressed, Unrefined, Hexane-free - Premium Quality - USP Grade (1 Gallon) US+cold-pressedhexane-freeunrefinedcheck size info | Pure cold-pressed castor oil | oil | N/A | $34.99as of Jul 18, 2026, 6:55 PM ET | N/A | — |
 Sky Organics USDA Organic Castor Oil with Rosemary Oil, Strengthening Oil, Pure Potent Blend, Hexane Free, Invigorates Scalp, Supports Stronger, Fuller-Looking Hair, DIY ebook included Sky Organicsorganiccold-pressedhexane-freeusda-certifiedunrefinedcheck size info | Castor & rosemary oil blends | oil | N/A | $15.99as of Jul 18, 2026, 6:55 PM ET | N/A | — |
 100% Pure Rosemary Oil for Hair Growth, Infused with Biotin, Jojoba & Castor Oils - Natural Hair Strengthening Serum, Scalp and Beard Oil, Aceite De Romero para El Cabello Fiora Naturalscold-pressedhexane-freecheck size info | Castor & rosemary oil blends | serum | N/A | $12.99as of Jul 18, 2026, 6:55 PM ET | N/A | — |
- GreenIVe 100% Pure Castor Oil, 32 Fl oz
GreenIVe · Pure cold-pressed castor oil · oil · 32 fl oz
$17.99 · $0.56/fl oz
as of Jul 18, 2026, 6:55 PM ET
Value N/A
cold-pressedhexane-freeglass-bottle - Organic Castor Oil 16 oz — USDA Certified by Mary Tylor Naturals — Cold Pressed, Hexane Free, 100% Pure and Natural
Mary Tylor Naturals · Organic (USDA) castor oil · oil · 16 fl oz
$9.99 · $0.62/fl oz
as of Jul 18, 2026, 6:55 PM ET
Value N/A
organiccold-pressedhexane-freeusda-certifiedcheck size info - Dwaraka Organic Cold Pressed Castor Oil for Digestion, Hair Growth, Skincare and Massages - 16.9 Fl Oz (500 ML) | USDA Organic, Non-GMO, All Natural
DWARAKA · Organic (USDA) castor oil · oil · 16.9 fl oz
$12.99 · $0.77/fl oz
as of Jul 18, 2026, 6:55 PM ET
Value N/A
organiccold-pressedhexane-freeusda-certifiedunrefined 
MAJESTIC PURE Pure Jamaican Black Castor Oil for Hair Care, Strengthening, Nourishing, and Volumizing Formula - Non GMO Verified, 16 Fl OzMajestic Pure · Jamaican black castor oil · oil · 16 fl oz
$15.99 · $1.00/fl oz
as of Jul 18, 2026, 6:55 PM ET
Value N/A
cold-pressed- Zatural Black Castor Oil_100% Pure Tropic Jamaican Black Castor Oil (8 Ounce)
Zatural · Jamaican black castor oil · oil · 8 fl oz
$11.99 · $1.50/fl oz
as of Jul 18, 2026, 6:55 PM ET
Value N/A
check size info 
Bronner Bros Tropical Roots Jamaican Black Castor Oil with Growth Complex – Moisture-Sealing Hair Oil to Thicken & Nourish Hair & Scalp with Rosemary & Eucalyptus, For All Hair Types, 5 fl ozBronner Bros · Castor & rosemary oil blends · oil · 5 fl oz
$8.40 · $1.68/fl oz
as of Jul 18, 2026, 6:55 PM ET
Value 83: 33% below typical for Castor & rosemary oil blends
- GreenIVe 100% Pure Castor Oil, 4 Fl oz
GreenIVe · Pure cold-pressed castor oil · oil · 4 fl oz
$6.99 · $1.75/fl oz
as of Jul 18, 2026, 6:55 PM ET
Value N/A
cold-pressedhexane-freeglass-bottle 
Handcraft Blends Rosemary Oil for Hair 8 Fl Oz | Nourishing Hair Oil | 100% Pure and Natural | Rosemary, Castor, Jojoba, and Batana Oils & Biotin | Carrier OilHandcraft Blends · Castor & rosemary oil blends · oil · 8 fl oz
$14.99 · $1.87/fl oz
as of Jul 18, 2026, 6:55 PM ET
Value 75: 25% below typical for Castor & rosemary oil blends
- Bella Terra Oils - Jamaican Black Castor Oil 8 oz - Capturing the Essence of Nature, A Versatile Addition to Your Beauty Routine
Bella Terra Oils · Jamaican black castor oil · oil · 8 fl oz
$14.99 · $1.87/fl oz
as of Jul 18, 2026, 6:55 PM ET
Value N/A
cold-pressedhexane-freecheck size info - Isoplus Black Castor Oil & Coconut Oil 5.25oz
LYSMOSKI · Other castor hair & scalp blends · oil · 5.25 fl oz
$9.93 · $1.89/fl oz
as of Jul 18, 2026, 6:55 PM ET
Value N/A
check size info 
STAR CARE Extra Strength Jamaican Black Castor Oil (with Peppermint Oil) for Hair Growth (4oz) - 100% Virgin JBCO Infused with Biotin & Niacin - Scalp Treatment for Thinning Hair, Edges, Balding SpotsSTAR CARE · Other castor hair & scalp blends · oil · 4 fl oz
$7.75 · $1.94/fl oz
as of Jul 18, 2026, 6:55 PM ET
Value N/A
check size info- Nutricost Essentials Organic Cold Pressed Castor Oil (8 oz)
Nutricost · Organic (USDA) castor oil · oil · 8 fl oz
$15.95 · $1.99/fl oz
as of Jul 18, 2026, 6:55 PM ET
Value N/A
organiccold-pressedunrefinedcheck size info 
Botanic Hearth Castor Oil for Hair Growth with Pumpkin Seed Oil, Hair Growth Oils for Thinning Hair, Dry Damaged Hair & Scalp Treatment, Strengthens & Nourishes Hair, 6.7 fl ozBotanic Hearth · Pure cold-pressed castor oil · oil · 6.7 fl oz
$14.99 · $2.24/fl oz
as of Jul 18, 2026, 6:55 PM ET
Value N/A
cold-pressed
STAR CARE Extra Strength Jamaican Black Castor Oil (with Lavender Oil) for Hair Growth (4oz) - 100% Virgin JBCO Infused with Biotin & Niacin - Scalp Treatment for Thinning Hair, Edges & Balding SpotsSTAR CARE · Jamaican black castor oil · oil · 4 fl oz
$8.95 · $2.24/fl oz
as of Jul 18, 2026, 6:55 PM ET
Value N/A
check size info- NIFEISHI Jamaican Black Castor Oil Organic Cold Pressed Glass Bottle, 4.04 fl oz
NIFEISHI · Jamaican black castor oil · oil · 4.04 fl oz
$9.49 · $2.35/fl oz
as of Jul 18, 2026, 6:55 PM ET
Value N/A
organiccold-pressedunrefinedglass-bottle 
AVD ORGANICS Rosemary Oil for Hair Growth & scalp | Infused with Biotin | Hair Strengthening, Nourishing and Volumizing | infused with Jojoba & Castor Oil | NON - GMO 120mlAVD ORGANICS · Castor & rosemary oil blends · oil · 4.06 fl oz
$9.99 · $2.46/fl oz
as of Jul 18, 2026, 6:55 PM ET
Value 51: 1% below typical for Castor & rosemary oil blends
organiccold-pressed
STAR CARE Extra Strength Jamaican Black Castor Oil (with Black Tea) for Hair Growth (4oz) - 100% Virgin JBCO Infused with Biotin & Niacin - Scalp Treatment for Thinning Hair, Edges & Balding SpotsSTAR CARE · Jamaican black castor oil · oil · 4 fl oz
$9.99 · $2.50/fl oz
as of Jul 18, 2026, 6:55 PM ET
Value N/A
check size info
Rosemary, Peppermint & Castor Oil for Hair Growth & Scalp Refresh (6.7 fl oz), Infused with Biotin, Black Sesame, Grapeseed, Jojoba, & Vitamin E Oils for Itchy Scalp, Refreshing & HydrationMenstrEaze · Castor & rosemary oil blends · oil · 6.7 fl oz
$16.95 · $2.53/fl oz
as of Jul 18, 2026, 6:55 PM ET
Value 49: 1% above typical for Castor & rosemary oil blends
Rosemary, Tea Tree, & Castor Oil for Hair Growth & Dandruff Relief (6.7 fl oz), Infused with Biotin, Black Sesame, Grapeseed, Jojoba, & Vitamin E Oils for Dry, Itchy Scalp, Thickening & HydrationMenstrEaze · Castor & rosemary oil blends · oil · 6.7 fl oz
$16.95 · $2.53/fl oz
as of Jul 18, 2026, 6:55 PM ET
Value 49: 1% above typical for Castor & rosemary oil blends
- Difeel Premium Castor Plus Argan - Pro-Growth + Hydrating Premium Hair Oil 2.5 oz.
Difeel · Other castor hair & scalp blends · oil · 2.5 fl oz
$6.89 · $2.76/fl oz
as of Jul 18, 2026, 6:55 PM ET
Value N/A
check size info - Black Jamaican Castor Oil Original Dark by Okay for Unisex - 4 oz Oil
OKAY · Pure cold-pressed castor oil · oil · 4 fl oz
$12.99 · $3.25/fl oz
as of Jul 18, 2026, 6:55 PM ET
Value N/A
check size info 
Lebanta Batana Oil For Hair - 100% Pure, Raw & Natural Blend With Organic Castor, Pumpkin Seed, Coconut and Rosemary Oil - Thicker, Stronger Looking Hair For Men & Women Scalp - 4 FL OZLebanta · Castor & rosemary oil blends · oil · 4 fl oz
$22.97 · $5.74/fl oz
as of Jul 18, 2026, 6:55 PM ET
Value 0: 50% above typical for Castor & rosemary oil blends
organic- Natural Riches Organic Castor Oil Roll On - Cold Pressed, Hexane Free, 100% Pure Beauty Blend - 1 fl oz Glass Bottle with Roller Ball Applicator
Natural Riches · Organic (USDA) castor oil · applicator · 1 fl oz
$11.25 · $11.25/fl oz
as of Jul 18, 2026, 6:55 PM ET
Value N/A
organiccold-pressedhexane-freeglass-bottle - 100% Pure Castor Oil - Cold-pressed, Unrefined, Hexane-free - Premium Quality - USP Grade (1 Gallon)
US+ · Pure cold-pressed castor oil · oil · N/A
$34.99
as of Jul 18, 2026, 6:55 PM ET
Value N/A
cold-pressedhexane-freeunrefinedcheck size info - Sky Organics USDA Organic Castor Oil with Rosemary Oil, Strengthening Oil, Pure Potent Blend, Hexane Free, Invigorates Scalp, Supports Stronger, Fuller-Looking Hair, DIY ebook included
Sky Organics · Castor & rosemary oil blends · oil · N/A
$15.99
as of Jul 18, 2026, 6:55 PM ET
Value N/A
organiccold-pressedhexane-freeusda-certifiedunrefinedcheck size info - 100% Pure Rosemary Oil for Hair Growth, Infused with Biotin, Jojoba & Castor Oils - Natural Hair Strengthening Serum, Scalp and Beard Oil, Aceite De Romero para El Cabello
Fiora Naturals · Castor & rosemary oil blends · serum · N/A
$12.99
as of Jul 18, 2026, 6:55 PM ET
Value N/A
cold-pressedhexane-freecheck size info
Frequently asked questions
- Does castor oil make hair grow faster?
- There is no good clinical evidence that topical castor oil increases the rate of hair growth or reverses hair loss. It can coat strands, add temporary shine, and be used in a cosmetic pre-wash routine. Persistent shedding, thinning, bald patches, or scalp symptoms should be evaluated by a qualified clinician.
- How current are these prices?
- Every displayed price was pulled from Amazon within the last 24 hours and includes a refresh time. If the data becomes older than 24 hours, prices disappear and the site shows product links only.
- What does price per fluid ounce mean?
- It is the current Amazon price divided by the total liquid volume, including pack count. This makes a small dropper and a large bottle comparable. Unit price measures cost, not ingredient quality or effectiveness.
- What is the difference between cold-pressed and Jamaican black castor oil?
- Cold-pressed oil is made from unroasted beans and is usually pale with a mild scent. Jamaican black castor oil uses roasted beans and is dark with a smoky aroma. The practical differences are processing, color, scent, texture, and price; neither label proves a hair-growth benefit.
- How is the value score calculated?
- The score compares a product’s unit price with the median for products in the same category and form. A score of 50 is the median. Scores are shown only when bottle size can be parsed with high confidence.
- How does this site make money?
- As an Amazon Associate, this site earns from qualifying purchases made through its links. Rankings are computed from unit price and are not influenced by commissions.