Science
Mechanism of Action
This ferment extract operates through several key mechanisms to enhance skin condition. It delivers potent antioxidant protection, reducing oxidative stress, and exhibits anti-inflammatory properties that help mitigate IgE/antigen-stimulated hypersensitivity, thereby minimizing redness, irritation, and dryness. The ingredient supports robust skin barrier function by upregulating tight junction proteins such as claudin-1, claudin-4, and occludin, and promoting the expression of filaggrin, serine palmitoyltransferase, and involucrin. It also stimulates new cell formation for regeneration, aids in gentle exfoliation via naturally generated lactic acid, and boosts collagen synthesis. Furthermore, it diminishes MMP-1 expression and suppresses IL-1α production, contributing to comprehensive anti-aging and anti-photoaging effects, alongside moisturizing and potential skin-brightening benefits amplified by the fermentation process.
Research
Clinical Evidence
Low confidenceN/A
Key findings
- 01 A butanol fraction of Phellinus linteus grown on germinated brown rice (PBR-BuOH) demonstrated inhibitory activity of degranulation with an IC50 of 41.31 ± 0.14 μg/mL, suggesting in vitro antiallergic effects.
Transparency
Dusting Analysis
No specific data on 'dusting' practices or typical concentrations for cosmetic efficacy were found in the research provided.
The Formula
Formulation
Stability
While the optimal pH range for Phellinus linteus mycelial growth is reported between 5.5 and 7.0, the specific optimal pH for the stability of this combined extract in cosmetic formulations is not explicitly defined. Generally, fermented rice ingredients are recognized for contributing to more stable and pH-balanced formulations.
Safety
Safety Profile
No dedicated safety assessment by the Cosmetic Ingredient Review (CIR), Scientific Committee on Consumer Safety (SCCS), or U.S. Food and Drug Administration (FDA) for 'PHELLINUS LINTEUS/RICE FERMENT EXTRACT' in cosmetic use was identified. Existing safety assessments for other yeast or lactobacillus ferment ingredients are not directly applicable to this specific combined extract.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Phellinus Linteus/Rice Ferment Extract is a valuable, multi-functional ingredient, offering significant antioxidant, anti-inflammatory, and barrier-enhancing benefits with low irritation and comedogenicity, making it suitable for a wide range of skin types.
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References
Sources