Science
Mechanism of Action
This extract functions by actively drawing and retaining moisture within the epidermal layers, effectively mitigating transepidermal water loss and reinforcing the skin's inherent barrier function. Its anti-aging capabilities stem from its role in restoring the Dermal Epidermal Junction (DEJ) and moderating inflammatory processes. Additionally, it helps to combat the deleterious effects of pollution. As a yeast extract, it is presumed to contain beta-glucan, imparting soothing, mild antioxidant, and film-forming properties.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
A precise optimal pH range for the stability of Pichia heedii extract itself has not been identified. However, studies on related Pichia species' growth or enzyme activity suggest varying optimal pH values (e.g., pH 5.4-7.6 for organism growth, pH 3.0-7.0 for specific protein production), indicating that formulation pH may influence its efficacy or integrity.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has assessed Pichia heedii extract as safe for its intended cosmetic uses, categorizing it within a broader group of Yeast-Derived Ingredients. Supplier studies indicated no sensitization reactions. This safety conclusion is supported by data from the FDA's Voluntary Cosmetic Registration Program (VCRP) and industry usage surveys. The cumulative heavy metal content in yeast extracts, including Pichia heedii, has been reported to be less than 20 ppm.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Pichia heedii extract is a valuable, multi-functional ingredient highly effective at boosting skin hydration, reinforcing barrier integrity, and offering protective and anti-aging benefits suitable for all skin types.
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References
Sources