Pure cold-pressed castor oil
Pure cold-pressed castor oil is the simplest option in the hair-oil aisle: one thick oil with no lighter carrier oils or fragrance added. People commonly use it as a pre-wash treatment, on dry ends, or diluted for scalp massage. Cold-pressed describes extraction, while hexane-free describes what was not used during processing; neither phrase proves that an oil increases hair growth.
The table compares current Amazon listings by price per fluid ounce so small droppers and large bottles can be judged on the same basis. Castor oil can be difficult to spread and rinse from fine hair, so many users dilute it with a lighter oil. Check the ingredient panel, patch-test before wider scalp use, and seek medical advice for persistent shedding or scalp symptoms.
Read the full guide: Does Castor Oil Help Hair Growth? Evidence and Expectations
Prices refreshed as of Jul 18, 2026, 9:26 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, 9:26 PM ET | $0.56/fl oz | — |
 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, 9:26 PM ET | $1.75/fl oz | — |
| Pure cold-pressed castor oil | oil | 6.7 fl oz | $14.99as of Jul 18, 2026, 9:26 PM ET | $2.24/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, 9:26 PM ET | $3.25/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, 9:26 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, 9:26 PM ET
Value N/A
cold-pressedhexane-freeglass-bottle - 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, 9:26 PM ET
Value N/A
cold-pressedhexane-freeglass-bottle 
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, 9:26 PM ET
Value N/A
cold-pressed- 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, 9:26 PM ET
Value N/A
check size info - 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, 9:26 PM ET
Value N/A
cold-pressedhexane-freeunrefinedcheck size info