Jojoba (Simmondsia chinensis) Seed Oil

Heritage and History

Jojoba oil is derived from the seeds of the Simmondsia chinensis plant, a shrub native to the deserts of North America, particularly the southwestern United States and northern Mexico [1]. The plant, often referred to as “jojoba” (pronounced ho-ho-ba), has a rich history of use by indigenous peoples, including the Native American tribes of the Sonoran Desert, such as the O’odham and the Seri. Ethnobotanical records describe these peoples using jojoba seeds and their oil in traditional preparations [1], including for hair care and on sores and burns.

Jojoba oil was not widely known outside of its native regions until the 20th century when it gained popularity in the beauty and cosmetics industries. It was discovered that jojoba oil is actually a liquid wax ester, rather than a true vegetable oil [1], making it unique among other oils used in skincare. As a result, it became a coveted ingredient in high-quality skincare and haircare products, particularly because wax esters are also one of the lipid types found naturally in human sebum [2].

Cultivation and Regional Origins

The jojoba plant is adapted to arid desert climates and tolerates drought well, although commercial plantations often use supplemental irrigation. It is primarily grown in the deserts of the southwestern United States, Mexico, and parts of South America. The plant is highly drought-resistant, making it an ideal crop for regions where water is scarce and other crops may struggle to grow.

Jojoba is a hardy, perennial shrub that can live for several decades, producing seeds that contain oil-rich wax esters. These seeds are harvested when fully mature, and the oil may be extracted through a cold-pressing method, which preserves its natural chemical profile. Jojoba can be grown on dry land that is often unsuitable for other types of agriculture.

With its increasing demand for use in cosmetics, the cultivation of jojoba has expanded globally, and it is now grown in countries including Argentina, Chile and Egypt [1]. The plant’s resilience, coupled with the growing interest in natural, organic beauty products, has solidified jojoba oil’s place in the global skincare market.

Chemistry of Jojoba Seed Oil

Jojoba oil is unique due to its chemical composition, which is distinct from other vegetable oils. Rather than being composed of triglycerides (as most oils are), jojoba oil is made up of liquid wax esters, a type of lipid also found in human sebum. This gives jojoba oil its remarkable compatibility with the skin, making it highly effective in moisturizing and balancing the skin’s natural sebum production.

Key components of pure, unadulterated jojoba oil include:

• Long-Chain Fatty Acids:

• Eicosenoic acid (C20:1): A monounsaturated fatty acid that plays a key role in moisturizing the skin and hair. It helps to improve the oil’s stability and enhance its emollient properties.

• Long-Chain Alcohols:

• Eicosenol (C20:1) and Docosenol (C22:1): Jojoba’s wax esters are built from these monounsaturated fatty alcohols, which give the oil its smooth, waxy texture.

• Vitamin E (Tocopherols): Jojoba oil contains tocopherols [1], which are potent antioxidants that protect the skin from oxidative stress caused by free radicals. Vitamin E helps to promote skin regeneration and prevent premature aging.

• Sterols: Jojoba oil contains various plant sterols [1] that have anti-inflammatory properties. These sterols also help to maintain the skin’s elasticity and promote skin health.

The chemical structure of jojoba oil allows it to spread easily and work in the skin’s outermost layers [3], similar to some of the skin’s natural oils, which makes it incredibly effective in maintaining hydration, healing wounds, and protecting against environmental stressors.

Benefits for Skin and Hair

Jojoba oil’s unique chemical profile makes it beneficial for both skin and hair care. Its moisturizing, healing, and anti-inflammatory properties make it a popular ingredient in a wide range of personal care products.

For Skin:

• Moisturizing and Balancing: Jojoba oil is an excellent natural moisturizer. Due to its similarity to some of the skin’s own oils, it can hydrate the skin without clogging pores. It also helps regulate oil production in the skin, making it suitable for both dry and oily skin types.

• Anti-Aging: The antioxidants, particularly vitamin E, in jojoba oil help protect the skin from free radical damage, which accelerates the aging process. Regular use of jojoba oil helps reduce the appearance of fine lines, wrinkles, and age spots by promoting skin regeneration and reducing oxidative stress.

• Wound Healing: In laboratory (cell-culture) studies, jojoba wax has sped up wound closure and increased collagen production in skin cells [4]. It supports the skin’s natural barrier function, promoting faster cell regeneration and preventing moisture loss, which is crucial for wound healing.

• Soothing and Calming: The anti-inflammatory properties of jojoba oil [1, 3] make it effective in calming irritated or inflamed skin. It can be beneficial for conditions like eczema, psoriasis, or rosacea, where inflammation is a key issue. It also helps reduce redness and soothes skin discomfort.

• Acne Treatment: Jojoba oil can be used to treat acne because it is similar to some of the skin’s natural oils and helps regulate oil production. Its antimicrobial properties also help reduce the occurrence of acne-causing bacteria on the skin. Additionally, jojoba oil helps prevent dryness that can result from harsh acne treatments.

For Hair:

• Hydration and Moisture: Jojoba oil works wonders on dry, damaged hair by providing deep moisture. Its long-chain fatty acids nourish the hair shaft, leaving it soft, smooth, and more manageable. It is also effective in preventing dry scalp and dandruff by restoring moisture to the scalp.

• Scalp Health: The anti-inflammatory properties of jojoba oil help maintain a healthy scalp, reducing irritation, flakiness, and itching. It also helps to balance the scalp’s oil production, promoting a healthier environment for hair growth.

• Shine and Luster: Jojoba oil adds a natural shine to the hair by smoothing the hair cuticle and preventing frizz. It creates a protective layer over the hair strands, reducing environmental damage and UV exposure.

• Strengthening and Protection: Jojoba oil strengthens the hair by nourishing the follicles, reducing hair breakage, and protecting against damage from styling tools, heat, and pollution. The oil’s rich nutrient content also supports hair elasticity, reducing split ends.

How It Works

Jojoba oil’s molecular structure, which is similar to the wax esters in human sebum, enables it to integrate seamlessly into the skin’s lipid layer. When applied to the skin, jojoba oil works in the skin’s outermost layers, replenishing the skin’s moisture and balancing oil production. This helps to maintain the skin’s barrier function, preventing moisture loss and protecting against environmental aggressors like pollution and UV rays.

On a microbiological level, jojoba oil’s antimicrobial properties help to inhibit the growth of acne-causing bacteria such as Cutibacterium acnes (formerly Propionibacterium acnes). By regulating sebum production and preventing clogged pores, jojoba oil reduces the likelihood of breakouts, making it an effective treatment for acne-prone skin.

For hair, jojoba oil’s emollient properties smooth the hair cuticle, locking in moisture and preventing water loss. This protects the hair from dryness, frizz, and breakage while promoting a healthier, shinier appearance. Additionally, jojoba oil’s ability to balance sebum production on the scalp ensures a healthy environment for hair growth.

Allergen Information

Food allergens: Jojoba is not one of the nine major food allergens recognized by the U.S. Food and Drug Administration (milk, eggs, fish, crustacean shellfish, tree nuts, peanuts, wheat, soybeans and sesame) [5]. Jojoba belongs to the jojoba family (Simmondsiaceae).

Fragrance allergens: Jojoba oil is a liquid plant wax, not an essential oil, and does not appear on the European Union’s list of fragrance allergens that must be named on cosmetic labels [6].

Reported reactions: A few cases of allergic contact dermatitis to jojoba oil, confirmed by patch testing, have been published [7, 8].

Patch test: As with any new skincare product, try a small amount on your inner arm and wait 24 hours before wider use. If you have a known allergy, ask your doctor before using a new product.

Conclusion

Jojoba seed oil is a versatile and highly beneficial ingredient with a wide range of uses in skincare and haircare. Its unique chemical composition, which is similar to some of the skin’s natural oils, makes it ideal for moisturizing, soothing, and protecting both the skin and hair. Whether you’re looking to balance oil production, reduce inflammation, or promote skin and hair regeneration, jojoba oil offers a natural and effective solution. With its long history of use in traditional medicine and its continued popularity in modern beauty products, jojoba oil remains a staple ingredient for achieving healthy, nourished skin and hair.

References

[1] Gad, H. A., Roberts, A., Hamzi, S. H., Gad, H. A., Touiss, I., Altyar, A. E., Kensara, O. A., & Ashour, M. L. (2021). Jojoba oil: an updated comprehensive review on chemistry, pharmaceutical uses, and toxicity. Polymers, 13(11), 1711. https://doi.org/10.3390/polym13111711

[2] Picardo, M., Ottaviani, M., Camera, E., & Mastrofrancesco, A. (2009). Sebaceous gland lipids. Dermato-Endocrinology, 1(2), 68–71. https://doi.org/10.4161/derm.1.2.8472

[3] Lin, T.-K., Zhong, L., & Santiago, J. L. (2018). Anti-inflammatory and skin barrier repair effects of topical application of some plant oils. International Journal of Molecular Sciences, 19(1), 70. https://doi.org/10.3390/ijms19010070

[4] Ranzato, E., Martinotti, S., & Burlando, B. (2011). Wound healing properties of jojoba liquid wax: an in vitro study. Journal of Ethnopharmacology, 134(2), 443–449. https://doi.org/10.1016/j.jep.2010.12.042

[5] U.S. Food and Drug Administration. (2025). Frequently asked questions: Food allergen labeling guidance for industry. Retrieved October 15, 2026, from https://www.fda.gov/food/food-allergensgluten-free-guidance-documents-regulatory-information/frequently-asked-questions-food-allergen-labeling-guidance-industry

[6] European Parliament & Council of the European Union. (2009). Regulation (EC) No 1223/2009 on cosmetic products, Annex III, as amended by Commission Regulation (EU) 2023/1545 on the labelling of fragrance allergens. Official Journal of the European Union. https://eur-lex.europa.eu/eli/reg/2023/1545/oj

[7] Di Berardino, L., Di Berardino, F., Castelli, A., & Della Torre, F. (2006). A case of contact dermatitis from jojoba. Contact Dermatitis, 55(1), 57–58. https://pubmed.ncbi.nlm.nih.gov/16842559/

[8] Wantke, F., Hemmer, W., Götz, M., & Jarisch, R. (1996). Contact dermatitis from jojoba oil and myristyl lactate/maleated soybean oil. Contact Dermatitis, 34(1), 71–72. https://pubmed.ncbi.nlm.nih.gov/8789240/