Coriander seed oil is obtained from the seeds of Coriandrum sativum L., an annual aromatic plant belonging to the Apiaceae family. The plant is commonly known as coriander or cilantro, although the term cilantro generally refers to the fresh leaves, while the seeds are commonly referred to as coriander.

The supplied material is sourced from Ukraine and uses the seed as the plant part.

Coriander has been cultivated and used by humans for thousands of years as both a culinary ingredient and traditional medicinal plant. Archaeological evidence indicates that coriander seeds were known in ancient Egypt, and historical records describe their use as a flavoring and medicinal herb. Coriander subsequently became widely distributed throughout Europe and other regions.

INCI Name

Coriandrum Sativum Seed Oil

Plant Part Used

Seed

Country of Origin

Ukraine

Function

Coriander seed oil functions primarily as a skin-conditioning and emollient ingredient in cosmetic formulations. Depending on its composition and processing, it may also contribute antioxidant and other biological properties to a formulation.

Composition

Coriander seed oil is unusual among vegetable oils because its major fatty acid is often petroselinic acid, a positional isomer of oleic acid.

Studies of coriander seed oil commonly report approximately 60–75% petroselinic acid, although the exact composition can vary substantially depending on cultivar, geographical origin, growing conditions and extraction method. Linoleic acid is generally present as another important fatty acid, together with smaller amounts of oleic, palmitic and stearic acids.

The fatty acid composition reported for coriander seed oil therefore differs from that of many common cosmetic plant oils and is an important characteristic of the ingredient.

Cosmetic Applications

Coriander seed oil can be incorporated into cosmetic formulations where a plant-derived emollient is desired. It may be used in skincare products such as creams, lotions, balms, facial oils and cleansing products, as well as in haircare formulations.

Its lipid composition can provide a conditioning and lubricating effect on the skin. The presence of linoleic acid may also be relevant to formulations intended to support the skin barrier, as linoleic acid is an important component of epidermal lipids.

Coriander seed oil should be distinguished from coriander essential oil. The fixed seed oil is predominantly composed of triglycerides and fatty acids, whereas coriander essential oil is a volatile aromatic fraction in which compounds such as linalool are major constituents.

Skin Conditioning Properties

As a vegetable oil rich in unsaturated fatty acids, coriander seed oil can provide emollient properties and contribute to the softness and smoothness of the skin.

Its high proportion of monounsaturated fatty acids gives the oil a distinctive lipid profile. The presence of linoleic acid is also of interest in skin formulations because linoleic acid plays an important structural role in the stratum corneum and is involved in maintaining epidermal barrier function.

Antioxidant and Biological Activity

Research has investigated antioxidant and antimicrobial activities associated with coriander seed oil and its constituents. The activity observed can depend strongly on the extraction method and the chemical composition of the resulting oil.

It is therefore important to distinguish between the biological properties demonstrated in laboratory studies and proven effects of a finished cosmetic formulation. The presence of antioxidant activity in an isolated oil does not automatically mean that a finished product will provide a measurable antioxidant effect on the skin.

Anti-Inflammatory Research

Coriander seed oil has also been investigated for potential anti-inflammatory effects.

Research has identified petroselinic acid as a major constituent of coriander seed oil and has investigated its possible influence on inflammatory pathways. A pilot clinical study involving virgin coriander seed oil reported reductions in experimentally induced redness and itching in healthy women with sensitive skin following oral supplementation. These findings are interesting from a biological perspective, but they should not be directly interpreted as evidence that topical cosmetic coriander seed oil treats inflammatory skin conditions.

Formulation Considerations

Coriander seed oil is an oil-soluble ingredient and can be incorporated into the oil phase of emulsions or used directly in anhydrous formulations.

It may be combined with other vegetable oils, esters, butters and synthetic emollients to adjust the sensory characteristics and overall fatty acid profile of a formulation.

The sensory properties of coriander seed oil can vary according to its processing, refining level and fatty acid composition. Formulators should therefore evaluate the specific raw material rather than assuming that all coriander seed oils will have identical performance.

Stability

The relatively high proportion of monounsaturated fatty acids contributes to the oxidative characteristics of coriander seed oil, although the presence of polyunsaturated fatty acids means that oxidation remains an important consideration.

Storage conditions, extraction method, refining, exposure to oxygen and light, and the presence of naturally occurring or added antioxidants can all influence the stability of the oil.

Finished formulations containing coriander seed oil should undergo appropriate stability testing. Packaging that limits exposure to oxygen and light may be beneficial depending on the formulation and expected shelf life.

Traditional Uses

Coriander has been used as a culinary and medicinal herb since antiquity. Historical sources describe its use as a flavoring, while traditional practices have associated coriander preparations with digestive, soothing and other applications.

Traditional external use has included preparations applied to the skin for various purposes, including rheumatic discomfort. Historical and folkloric accounts also attribute a variety of properties to coriander, including its use in traditional Chinese medicine and medieval European folklore.

These historical uses are part of the cultural history of the plant and should not be interpreted as evidence of clinically established effects of coriander seed oil.

Other Uses

Coriander seeds and their oils have applications beyond cosmetics. The seeds are widely used as a culinary spice, while coriander seed oil has been investigated and utilized in food, soap, detergent and other industrial applications.

Coriander seed oil should not be confused with coriander essential oil, which has a substantially different chemical composition and is primarily used for its characteristic aromatic properties.

Safety

Coriander seed oil has a long history of use as a food and botanical ingredient. However, safety should be assessed according to the specific type of oil, extraction process, purity and intended route of exposure.

Available safety information is more extensive for coriander essential oil and the spice than for every specific cosmetic-grade fixed seed oil. Essential oil data should therefore not automatically be applied to the fixed seed oil.

As with other botanical oils, the quality and identity of the raw material should be verified, and the finished cosmetic formulation should undergo appropriate safety assessment.

Regulatory Considerations

The regulatory status of coriander seed oil depends on the market, product category, raw material specification and intended use.

For cosmetic development, the botanical identity, plant part, extraction method and corresponding INCI designation should be confirmed using the supplier's technical and regulatory documentation.

Particular attention should be paid to distinguishing the fixed seed oil from coriander essential oil because they represent different fractions of the plant and have substantially different compositions and cosmetic functions.

References

Dweck, Anthony. Handbook of Natural Ingredients. Dweck Books.

Senrayan, J. and Venkatachalam, S. “Optimization of ultrasound-assisted solvent extraction (UASE) based on oil yield, antioxidant activity and evaluation of fatty acid composition and thermal stability of Coriandrum sativum L. seed oil.” Journal of Food Science and Technology, 2019. DOI: 10.1007/s10068-018-0467-1.

“Effect of the supplementation of virgin coriander seed oil on reducing reactivity in healthy women with sensitive skin: a randomized double-blind placebo-controlled pilot clinical study.” Clinical, Cosmetic and Investigational Dermatology, 2022.

“Coriandrum sativum L.: A Review on Ethnopharmacology, Phytochemistry, and Cardiovascular Benefits.” Molecules, 2021.

“Essential Oil from Coriandrum sativum: A review on Its Phytochemistry and Biological Activity.” Molecules, 2023.

Burdock, G. A. and Carabin, I. G. “Safety assessment of coriander (Coriandrum sativum L.) essential oil as a food ingredient.” Food and Chemical Toxicology, 2009, 47(1), 22–34. DOI: 10.1016/j.fct.2008.11.006.

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