Science
Mechanism of Action
This extract operates as a formidable antioxidant by actively inhibiting oxygen-promoted reactions, thereby safeguarding other formulation ingredients from degradation and skin cells from damage. Its primary active compound, astaxanthin, directly neutralizes reactive oxygen species, protecting cellular structures. Additionally, it functions as a skin conditioning emollient, contributing to a softer, more refined skin texture.
Research
Clinical Evidence
Insufficient-data confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel deemed yeast-derived ingredients, including Phaffia Rhodozyma Ferment Extract, as safe for cosmetic use. In vitro dermal irritation assays showed negative results when tested neat at a 49% concentration, and genotoxicity (Ames assays) was negative at concentrations up to 5000 µg/plate. Note that while 'phaffia yeast' is FDA-approved as a color additive for salmonid fish feed, this specific approval does not pertain to human cosmetic applications.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Phaffia Rhodozyma Ferment Extract is a valuable ingredient, offering robust antioxidant protection via astaxanthin and conditioning benefits, supported by a strong safety profile.
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References
Sources