Simmondsia Chinensis Seed Oil

Simmondsia Chinensis Seed Oil

Also-called-like-this: Jojoba Oil
What-it-does: emollient


Jojoba is a drought resistant evergreen shrub native to South-western North America. It's known and grown for jojoba oil, the golden yellow liquid coming from the seeds (about 50% of the weight of the seeds will be oil).  

At first glance, it seems like your average emollient plant oil: it looks like an oil and it's nourishing and moisturizing to the skin but if we dig a bit deeper, it turns out that jojoba oil is really special and unique: technically - or rather chemically - it's not an oil but a wax ester (and calling it an oil is kind of sloppy). 

So what the heck is a wax ester and why is that important anyway? Well, to understand what a wax ester is, you first have to know that oils are chemically triglycerides: one glycerin + three fatty acids attached to it. The fatty acids attached to the glycerin vary and thus we have many kinds of oils, but they are all triglycerides. Mother Nature created triglycerides to be easily hydrolyzed (be broken down to a glycerin + 3 fatty acid molecules) and oxidized (the fatty acid is broken down into small parts) - this happens basically when we eat fats or oils and our body generates energy from it.

Mother Nature also created wax esters but for a totally different purpose. Chemically, a wax ester is a fatty acid + a fatty alcohol, one long molecule. Wax esters are on the outer surface of several plant leaves to give them environmental protection. 25-30% of human sebum is also wax esters to give us people environmental protection. 

So being a wax ester results in a couple of unique properties: First, jojoba oil is extremely stable. Like crazy stable. Even if you heat it to 370 C (698 F) for 96 hours, it does not budge. (Many plant oils tend to go off pretty quickly). If you have some pure jojoba oil at home, you should be fine using it for years. 

Second, jojoba oil is the most similar to human sebum (both being wax esters), and the two are completely miscible. has this not fully proven theory that thanks to this, jojoba might be able to "trick" the skin into thinking it has already produced enough sebum, so it might have "skin balancing" properties for oily skin.

Third, jojoba oil moisturizes the skin through a unique dual action: on the one hand, it mixes with sebum and forms a thin, non-greasy, semi-occlusive layer; on the other hand, it absorbs into the skin through pores and hair follicles then diffuses into the intercellular spaces of the outer layer of the skin to make it soft and supple.

On balance, the point is this: in contrast to real plant oils, wax esters were designed by Mother Nature to stay on the surface and form a protective, moisturizing barrier and jojoba oil being a wax ester is uniquely excellent at doing that.

Show me some proof

  • Glob. J. Agric. Food Safety Sci., Vol.2 (3): pp. 270 283 (2015), Chemical studies on grown jojoba oils under Egyptian conditions

Products with Simmondsia Chinensis Seed Oil

Esse Repair Oil Herbivore Botanicals Phoenix Facial Oil Madara Smart Antioxidants Fine Line Minimising Day Fluid Medik8 Red Alert Serum Medik8 Retinol 3 Tr Pyunkang Yul Oil Rodin Geranium & Orange Blossom Luxury Face Oil Rodin Jasmine & Neroli Luxury Face Oil Rodin Lavender Absolute Luxury Face Oil Schaebens Vitamin C Konzentrat URANG S.O.S. Multibalm URANG Vitamin Oil Serum Moisturizer With Licochalcone Acure Seriously Soothing Blue Tansy Night Oil Anointment Natural Skin Care Shea Butter Cream DADO SENS Sensacea Soothing Face Emulsion Derma E Nourishing Rose Cleansing Oil, Argan & Jojoba Oils Elate Cosmetics Universal Crème Esse Eye & Lip Cream French Girl Organics Facial Oil Elixir Fresh Sugar Advanced Therapy Lip Treatment Herbivore Lapis Facial Oil In Fiore Lustra Illuminating Cleansing Essence Josh Rosebrook Hydrating Accelerator KORA ORGANICS Noni Glow Face Oil Lumene Valo Arctic Berry Cocktail Brightening Hydra-Oil Manyo Factory Nutritive Oil Miod Lip Balm Neal's Yard Remedies Wild Rose Beauty Balm OLEHENRIKSEN Banana Bright Eye Crème Origins Dr. Andrew Weil For Origins Mega-Mushroom Relief & Resilience Advanced Face Serum Origins Dr. Weil For Origins Mega-Mushroom Relief And Resilience Advanced Face Serum Pestle & Mortar Superstar Sarah Chapman Overnight Facial Skin Actives Anti-Aging Cream Skin Actives Bright-I Cream Skin Actives Dream Cream Skin Actives Restoration Cream Skin Actives Revitalizing Night Cream Skin Actives Skin Brightening Cream Skin Actives Ultimate Moisturizing Cream Skin Actives Uv Repair Cream Skin Actives Vitamin A Cream The Organic Pharmacy Carrot Butter Cleanser Trilogy Rosehip Oil Light Blend URANG Glow Oil Serum 10 Degrees Cooler 03 Midnight In Corsica Face Oil Crave Skincare Salvation Oil Darphin 8-Flower Oil Cream Darphin Vetiver Aromatic Care For Stress Relief