Castor Oil is a specialty botanical cosmetic oil obtained from the seeds of Ricinus communis L., commonly known as the castor bean plant. It is a plant-derived fixed vegetable oil widely used in cosmetic and personal-care formulations because of its distinctive fatty acid composition, rich texture and emollient properties.
Castor Oil is particularly characterized by its naturally high content of ricinoleic acid, a hydroxylated monounsaturated fatty acid that distinguishes castor oil from most other common vegetable oils. The oil also contains smaller amounts of oleic acid, linoleic acid, palmitic acid and stearic acid.
Castor Oil is generally supplied as a clear to pale-yellow or yellow viscous liquid. It can be incorporated into skincare, haircare, lip-care, cleansing, decorative cosmetic and other personal-care formulations where an emollient, conditioning and oil-phase ingredient is required.
Castor Oil is a fixed vegetable oil obtained by processing the seeds of Ricinus communis L. The oil is primarily composed of triglycerides, with ricinoleic acid representing its characteristic major fatty acid.
The hydroxyl group present in ricinoleic acid contributes to Castor Oil's distinctive polarity, viscosity and solubility characteristics compared with many other vegetable oils. These properties make Castor Oil particularly useful in cosmetic formulations requiring a rich, lubricious and conditioning oil.
Castor Oil should be distinguished from hydrogenated castor oil, PEG-40 hydrogenated castor oil, castor oil derivatives and other chemically modified castor-derived ingredients. These materials have different chemical structures, physical properties and cosmetic functions.
For cosmetic formulation and procurement, the exact grade, processing method, refining level and applicable specification should be confirmed.
Castor Oil functions as an emollient in cosmetic formulations. Its viscous and lubricious nature can contribute to a rich, smooth skin feel.
Castor Oil can be incorporated into skincare formulations where skin-conditioning and emollient properties are desired. It can contribute to the sensory characteristics of creams, balms, oils and other leave-on products.
Castor Oil is widely used in haircare formulations because of its rich texture and conditioning properties. It can be incorporated into hair oils, masks, conditioners and other hair-treatment products.
Castor Oil can contribute to the film characteristics, gloss and adhesion of certain cosmetic formulations. This makes it particularly useful in some lip-care and color-cosmetic systems.
Its distinctive polarity and compatibility with various cosmetic ingredients allow Castor Oil to function as part of the oil phase and as a carrier for selected oil-soluble ingredients.
One of the defining characteristics of Castor Oil is its high concentration of ricinoleic acid (C18:1-OH).
Ricinoleic acid is a hydroxylated fatty acid and typically represents the dominant fatty acid in Castor Oil. The presence of the hydroxyl group gives Castor Oil properties that distinguish it from conventional vegetable oils dominated by non-hydroxylated fatty acids.
Other fatty acids associated with Castor Oil include:
The actual fatty acid percentages vary according to seed source, cultivar, processing method and commercial grade. The current COA should be used where a defined fatty acid profile is required.
Depending on the extraction and refining process, Castor Oil may contain naturally occurring minor components such as:
Refined and unrefined grades can differ in color, odor, viscosity, oxidative stability and minor-component profile.
Castor Oil is used in a wide variety of cosmetic and personal-care formulations.
Skincare
Haircare
Lip Care
Color Cosmetics
Cleansing and Personal Care
Castor Oil has a distinctive high-viscosity profile and should be evaluated according to the desired sensory and processing characteristics of the finished product.
Recommended formulation considerations include:
Castor Oil and Hydrogenated Castor Oil are different ingredients.
Castor Oil is a liquid fixed vegetable oil containing a high proportion of ricinoleic acid.
Hydrogenated Castor Oil is produced by hydrogenating castor oil, which changes the degree of unsaturation and physical properties of the material. It is generally a solid or wax-like ingredient and is used differently in cosmetic formulations.
They should therefore not be substituted for one another without formulation and specification evaluation.
PEG-40 Hydrogenated Castor Oil is an ethoxylated derivative of hydrogenated castor oil and is chemically different from plain Castor Oil.
It has different functionality and is commonly used in cosmetic formulations for solubilization and related formulation purposes. Plain Castor Oil should therefore be documented and specified separately from PEG-modified castor-oil derivatives.
Castor Oil is obtained from castor seeds, which naturally contain ricin, a toxic protein. Proper industrial processing and purification are essential to produce cosmetic-grade Castor Oil suitable for intended applications.
Commercial cosmetic-grade Castor Oil should therefore be sourced with appropriate manufacturing controls and quality documentation. The finished cosmetic raw material should meet the applicable specification for its intended use.
Swapnroop provides Castor Oil as a botanical cosmetic ingredient for manufacturers, formulators and personal-care businesses requiring a versatile ricinoleic-acid-rich fixed oil.
Castor Oil can be considered for skincare, haircare, lip-care, color cosmetics, cleansing and other personal-care formulations. Product identity, refining level, fatty acid composition, acid value, peroxide value and other technical characteristics should be evaluated according to the selected commercial grade and batch documentation.
Castor Oil is a fixed vegetable oil obtained from the seeds of Ricinus communis L. It is widely used as an emollient, skin-conditioning and hair-conditioning ingredient in cosmetic formulations.
The INCI name is Ricinus Communis Seed Oil.
A commonly assigned CAS number for Castor Oil is 8001-79-4.
Yes. Castor Oil is normally supplied as a viscous liquid at typical ambient temperatures.
No. Castor Oil is essentially insoluble in water, although its polarity and hydroxylated fatty acid content distinguish it from many conventional vegetable oils.
Castor Oil is used as an emollient, skin-conditioning and hair-conditioning ingredient. It is also widely used in lip-care, color cosmetics, cleansing formulations and oil-based personal-care products.
Ricinoleic acid is the characteristic major fatty acid of Castor Oil.
Castor Oil is distinguished by its high ricinoleic acid content. Ricinoleic acid contains a hydroxyl group that contributes to Castor Oil's distinctive viscosity, polarity and formulation behavior.
Yes. It can be incorporated into creams, lotions, facial oils, balms and other skin-conditioning formulations.
Yes. Castor Oil can be used in hair oils, masks, conditioners, scalp-care products and other hair formulations.
Yes. Castor Oil is widely used in lip balms, lip oils, lip glosses, lipsticks and other color or conditioning lip formulations.
No. Hydrogenated Castor Oil is chemically modified through hydrogenation and has different physical properties and cosmetic applications.
No. PEG-40 Hydrogenated Castor Oil is an ethoxylated derivative of hydrogenated castor oil and is chemically different from plain Castor Oil.
Castor seeds naturally contain ricin, but properly processed cosmetic-grade Castor Oil is manufactured and purified to meet appropriate quality requirements. Commercial cosmetic raw material should be supported by appropriate quality documentation.
Castor Oil should be stored in a tightly closed container protected from excessive heat, light and prolonged oxygen exposure according to the storage requirements of the applicable commercial grade.
| Parameter | Specification |
|---|---|
| Appearance | Colourless to light-yellow liquid or oily liquid |