Science
Mechanism of Action
The Rice Ferment Filtrate component actively strengthens the skin barrier by stimulating the production of crucial endogenous hydrators: hyaluronic acid (increasing production by up to 1.9-fold in vitro), natural moisturizing factors (NMFs, up to 1.2-fold in vitro), and ceramides. This is facilitated by elevated gene expression of filaggrin (FLG), BLMH, and genes involved in ceramide synthesis. Beyond hydration, it acts as a robust antioxidant, demonstrating a DPPH free radical inhibition rate of 40-52%, which contributes to its anti-aging, brightening, and collagen-stimulating properties. While specific cosmetic mechanisms for the Persicaria Tinctoria Leaf Ferment Filtrate are less detailed in available research, related botanical extracts, such as Indigofera Tinctoria, are recognized for their antioxidant, soothing, and barrier-reinforcing benefits.
Research
Clinical Evidence
High confidenceN/A
Key findings
- 01 A 4-week placebo-controlled clinical study (N=15) demonstrated that daily topical treatment with rice ferment filtrate significantly improved skin barrier function. It increased stratum corneum water content by an average of 9.8μS (from 0.3μS to 10.1μS), lowered transepidermal water loss (TEWL) from 1.34g/m²h to 0.58g/m²h, and enhanced the skin's water-holding capacity by 1.4-fold.
- 02 An 8-week application of a face cream containing rice ferment filtrate significantly reduced both the area and length of wrinkles around the eyes, while concurrently enhancing overall skin firmness and smoothness.
- 03 In a double-blind, placebo-controlled clinical trial, an emulsion formulated with rice fermentation filtrate decreased transepidermal water loss (TEWL) significantly by 25.05% within just ten minutes of application.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
The rice ferment filtrate component exhibits stability for at least 24 months when stored unopened in dry, light-protected conditions at ambient temperatures. No specific optimal pH range for the stability of the combined cosmetic ingredient was identified in the available data.
Safety
Safety Profile
No direct Cosmetic Ingredient Review (CIR) assessment was found for the combined ingredient 'RICE FERMENT FILTRATE/PERSICARIA TINCTORIA LEAF FERMENT FILTRATE'. While Rice Ferment Filtrate is widely used, its specific safety status as a standalone or in this combined form has not been explicitly reviewed by CIR as 'safe as used'. No SCCS or FDA status for this specific combined ingredient was identified.
Your Skin
Skin Compatibility
Our Assessment
Verdict
This ferment blend is a valuable ingredient for comprehensive skin rejuvenation, delivering robust barrier enhancement, deep hydration, and significant anti-aging effects, leveraging the proven efficacy of Rice Ferment Filtrate. While the specific benefits of the Persicaria component in cosmetic applications require further dedicated research, the overall blend contributes to healthier, more resilient skin.
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