Rice Bran

米ぬか

Also known as: Komenuka, rice bran extract

Antioxidant (抗酸化) cosmetic moderate evidence

What It Does

A traditional Japanese beauty ingredient rich in antioxidants, vitamins, and fatty acids. Used for centuries to brighten and soften skin.

Rice bran, known as komenuka in Japanese, is the outer layer of the rice grain removed during polishing. It is rich in vitamins (especially vitamin E and B vitamins), minerals, fatty acids, and antioxidants like ferulic acid and gamma-oryzanol. Rice bran has been used in Japanese beauty rituals for centuries, traditionally applied as a cleansing and brightening treatment.

Rice bran extract and rice bran oil provide antioxidant protection, brighten skin tone, improve texture, and have gentle exfoliating properties due to natural enzymes. Ferulic acid is particularly effective at neutralizing free radicals and stabilizing other antioxidants like vitamin C. Gamma-oryzanol provides additional UV protection.

Japanese skincare embraces rice bran as a traditional beauty ingredient. Brands like Tatcha, Komenuka Bijin, and Utena use rice bran in cleansers, masks, and moisturizers. The ingredient represents the Japanese philosophy of finding beauty benefits in everyday foods and agricultural byproducts.

How It Works

Antioxidants (ferulic acid, gamma-oryzanol, vitamin E) neutralize free radicals and provide UV protection. Natural enzymes gently exfoliate.

The Japanese Context

Traditional Japanese beauty ingredient used for centuries. Represents Japanese philosophy of beauty from nature. Widely used in cleansers and masks.

Best For

all skin dullness uneven tone rough texture oxidative stress

How It's Used

Typical concentration: 1 to 10% for extracts, up to 100% for pure rice bran oil

Ingredient Interactions

Side Effects and Cautions

Very well tolerated. Rare allergic reactions possible.

Products With Rice Bran