Best For Skin Types
All, Dry, Combination
Addresses
Usage Frequency
Daily
What Is Coix Lacryma-Jobi Ma-Yuen Bran Oil?
Coix Lacryma-Jobi Ma-Yuen bran oil is derived from the seeds of Job's tears (also known as coix), a cereal grain native to Southeast Asia. The oil is extracted from the bran layer of the seed and contains a blend of fatty acids and plant compounds that give it conditioning and hydrating properties.
In skincare and haircare formulations, this ingredient functions as both a humectant—drawing moisture into the skin—and an occlusive, helping to seal that hydration in place. It's typically used in lighter formulations where a nourishing oil is needed without excessive heaviness.
How It Works
The oil's fatty acid composition allows it to form a protective layer on the skin's surface, reducing transepidermal water loss. Simultaneously, its humectant properties help draw water from deeper skin layers and the environment into the stratum corneum, enhancing hydration levels.
Because it's lighter than many plant oils, it absorbs relatively well and doesn't leave a heavy residue, making it suitable for formulations where occlusion is desired without excessive greasiness.
Clinical Evidence & References
Published research specifically examining coix bran oil in skincare is limited. Most evidence comes from traditional use and ingredient supplier data rather than peer-reviewed clinical trials. The ingredient has a long history in Asian skincare traditions, where it has been valued for conditioning properties.
Its fatty acid profile suggests it should perform similarly to other plant seed oils in terms of hydration and skin conditioning, but direct comparative studies in humans would be needed to establish efficacy claims with certainty.
How to Use
This ingredient is typically used as part of a finished skincare or haircare product rather than applied directly. When formulated into serums, oils, creams or hair treatments, it can be used daily. If you have sensitive skin, introduce products containing this ingredient gradually to monitor tolerance, as with any new plant oil.
Safety & Precautions
Frequently Asked Questions
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Cleyera Japonica Leaf Extract
A plant-derived humectant that helps skin retain moisture
Cnidium Monnieri Fruit Extract
A botanical humectant traditionally used to calm irritated and itchy skin
Cocos Nucifera Fruit Juice
A plant-derived humectant and emollient from coconut fruit with conditioning properties
Coix Lacryma-Jobi Ma-Yuen Seed Powder
A plant-derived humectant that draws moisture into the skin and conditions the surface
Coix Lacryma-Jobi Ma-Yuen Shell Extract
A plant-derived humectant that draws moisture into the skin
Coleus Forskohlii Root Extract
Plant extract native to Asia, used for centuries in Ayurveda Compounds in the root have documented benefits for numerous skin concerns
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