Natural and essential oils are commonly extracted from parts of the plant such as leaves, seeds, nuts, and flowers. Rice bran, on the other hand, is extracted from the by-product of rice grain, the bran called chaff. This oil contains linoleic, oleic and alpha-linolenic unsaturated fatty acids which moisturize the skin. It also contains fat soluble compounds such as tocopherols, tocotrienols, carotenoids and gamma-oryzanol. Rice bran is the only vegetable that contains gamma-oryzanol, a potent antioxidant more powerful than vitamin E. Research shows the content of gamma-oryzanol is ten folds than that of vitamin E in rice bran as well.
- Softens and smooths the skin
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Paucar-Menacho, Luz Maria, et al. "Refining of rice bran oil (Oryza sativa L.) under mild conditions for the preservation of γ-oryzanol." Food Science and Technology 27 (2007): 45-53.
Rigo, Lucas Almeida, et al. "Rice bran oil: benefits to health and applications in pharmaceutical formulations." Wheat and Rice in Disease Prevention and Health. Academic Press, 2014. 311-322.
Watson, Ronald Ross, and Sherma Zibadi, eds. Bioactive dietary factors and plant extracts in dermatology. Humana Press, 2013.
Xu, Zhimin, Na Hua, and J. Samuel Godber. "Antioxidant activity of tocopherols, tocotrienols, and γ-oryzanol components from rice bran against cholesterol oxidation accelerated by 2, 2 ‘-azobis (2-methylpropionamidine) dihydrochloride." Journal of agricultural and food chemistry 49.4 (2001): 2077-2081.