Rice Bran Extract

Rice bran extract (Oryza Sativa Bran Extract) is obtained from the pericarp and germ fractions of milled Oryza sativa — the rice grain. The fraction concentrates naturally occurring compounds including gamma-oryzanol, ferulic acid, tocopherols, tocotrienols, phytosterols, and B-vitamins.

Commercial preparation is typically by aqueous, hydro-alcoholic, or glycol extraction of stabilized rice bran, followed by filtration and standardization. The finished ingredient is supplied as a liquid extract or, in powder form, as a spray-dried concentrate.

In Japanese formulations, rice bran extract most often appears in moisturizing toners, cream cleansers, body soaps, sheet masks, and hair conditioners. It pairs frequently with other rice-derived ingredients such as rice ferment filtrate, rice germ oil, and rice protein — an ingredient family that Japanese brands have built a distinctive product narrative around.

Cultural context matters for this ingredient. Rice bran and rice-rinsing water (togijiru, 研ぎ汁) have been used in household skincare for generations, and some Japanese drugstore brands explicitly reference this traditional practice in their marketing. The ingredient therefore carries heritage positioning in addition to functional claims.

Rice bran extract is listed in the Japanese Cosmetic Ingredient Codex (化粧品表示名称) under the name コメヌカエキス and is permitted as a cosmetic ingredient without category-specific restrictions.

The ingredient is not a designated quasi-drug (医薬部外品) active ingredient on its own. Some rice-derived derivatives — for example, specific quasi-drug active ingredients produced via fermentation of rice — have their own separate regulatory status.