Rice Ferment Filtrate
Fermented rice filtrate with amino acids and B vitamins. A traditional Japanese cosmetics component, related to sake and koji.
Evidence by route
Topical application
Fermentation breaks large proteins into peptides and makes rice components more bioavailable. Japanese studies record hydration gains and tone evening.
How to read tiers A–F
- CWeak evidence. In vitro data, open-label studies, or expert consensus
Tolerability and safety
- Irritation potential
- Low
- Allergen risk
- Low
- Pregnancy
- Safe
- Suitable for
- Normal, Dry, Combination, Oily, Sensitive
About this ingredient
Rice Ferment Filtrate is a fermentation product of polished rice by yeast or molds (often Aspergillus oryzae – the same species behind koji and sake). The filtrate carries amino acids, oligopeptides, B-vitamins, inositol, GABA, ferulic acid. One of the oldest Japanese cosmetic ingredients – historically used by sake brewery workers whose hands looked noticeably younger than their faces. Where applied. Toners, serums, masks with K-beauty and J-beauty marketing (1-10%), brightening products, hydrating lines. On the Spanish market it appears in niche K-beauty stores and in Sesderma azelac. Close relative of SK-II Pitera saccharomyces filtrate. Evidence base. Hwang 2014 on melanocyte cultures showed tyrosinase inhibition and reduced melanin synthesis. Lab models also show anti-inflammatory potential. Few clinical topical RCTs of rice filtrate in humans; results are promising, but evidence quality is B/C. Safety. CIR has not issued a standalone review, but Asian cosmetics has long use experience. Hypoallergenic in most users, non-comedogenic. People with rice allergy (rare) – use with caution. Pregnancy and lactation – likely safe. A natural food product, no systemic absorption through intact skin. No formal restrictions.
Frequently asked questions
Is Rice Ferment Filtrate safe during pregnancy?
Rice Ferment Filtrate is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is Rice Ferment Filtrate for?
Rice Ferment Filtrate suits: normal, dry, combination, oily, sensitive.
What is Rice Ferment Filtrate and what does it do in cosmetics?
Fermented rice filtrate with amino acids and B vitamins.
What's the INCI name for Rice Ferment Filtrate?
The INCI name is Rice Ferment Filtrate.
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