Science
Mechanism of Action
This ingredient functions by delivering highly bioavailable components, such as amino acids, peptides, saccharides, organic acids (like lactic acid), polyphenols, vitamins, and enzymes, created through a fermentation process. It exhibits potent antioxidant activity, effectively neutralizing reactive oxygen species and combating free radical damage. The ferment filtrate significantly boosts skin hydration by increasing hyaluronic acid levels, promoting aquaporin 3 expression, and releasing natural moisturizing factors. It also reinforces the skin's lipid matrix, strengthening the natural barrier and reducing transepidermal water loss. Skin tone is improved through inhibition of melanin synthesis and reduction of MITF expression, which helps diminish hyperpigmentation. Additionally, it stimulates collagen and elastin production, enhances fibroblast migration, and offers gentle exfoliation from lactic acid, contributing to a smoother, more youthful complexion. The ingredient further soothes irritation, reduces inflammation by suppressing pro-inflammatory cytokines, and supports a healthy skin microflora.
Research
Clinical Evidence
Medium confidence1%
Key findings
- 01 At concentrations between 1.0-3.0%, this ingredient has been indicated by suppliers to provide antioxidant and anti-aging effects, soothe skin, even tone, firm, and protect against environmental stressors, while also conditioning the skin.
- 02 A clinical evaluation demonstrated that a lotion containing 10% fermented black rice bran extract significantly reduced hyperpigmentation in a study involving 34 female subjects.
- 03 Unspecified concentrations of a rice fermentation filtrate were found to decrease transepidermal water loss (TEWL) by 25.05% within ten minutes in a double-blind, placebo-controlled trial, signifying enhanced skin barrier function.
- 04 In vitro research on rice bran Lactobacillus fermentation broth showed an inhibitory effect on melanin synthesis, with an IC50 (half maximal inhibitory concentration) of 9.23 mg/mL, through the production of L-DOPA.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
While the microbial fermentation process for rice bran typically operates optimally within a pH range of 6.0-7.0, specific stability data for the final filtrate within a cosmetic formulation is not detailed in current research.
Safety
Safety Profile
Although 'LACTOBACILLUS/SACCHAROMYCES/HYDROLYZED RICE BRAN FERMENT FILTRATE' specifically lacks a dedicated CIR review, related Lactobacillus ferments and rice-derived ingredients have been deemed safe for cosmetic use. It is generally considered mild and non-irritating, with a low risk of adverse reactions. Formulators must ensure it is not used in concentrations or manners that cause unintended skin depigmentation, as significant skin lightening is regulated as a drug effect.
Your Skin
Skin Compatibility
Our Assessment
Verdict
This multifaceted fermented ingredient offers significant benefits for hydration, barrier function, skin tone, and protection against environmental stressors, making it a valuable addition to precision skincare formulations.
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