Science
Mechanism of Action
This extract functions by blocking the nuclear translocation of the glucocorticoid receptor, effectively neutralizing cortisol activity within human skin cells. This critical action prevents cortisol-induced degradation of collagen and hyaluronic acid (HA), while simultaneously upregulating the gene expression necessary for Type 1 collagen (COL1A1) and HA synthases (HAS2, HAS3). Beyond stress mitigation, it promotes epidermal regeneration by stimulating cell production and differentiation, and enhances the synthesis of extracellular matrix components like elastin, glycosaminoglycans, and proteoglycans, actively limiting their enzymatic breakdown. Furthermore, it delivers beneficial antioxidant and anti-inflammatory effects.
Research
Clinical Evidence
Medium confidence0.01%
Key findings
- 01 An in vitro study demonstrated that Iris pallida extract (IPE) at 0.01% (100 µg/mL) effectively counteracted cortisol-induced reductions in Type 1 collagen and hyaluronic acid syntheses in human skin cells. It restored Type 1 collagen levels by 106% and hyaluronic acid levels by 31% relative to cortisol-induced diminished states. The key component, irigenin, independently restored Type 1 collagen levels by 82% at a concentration of 0.63 µg/mL.
Transparency
Dusting Analysis
There is no indication that Iris Pallida Leaf Cell Extract is commonly 'dusted' at sub-efficacious percentages. The reported effective concentration is precise and relatively low.
The Formula
Formulation
Safety
Safety Profile
In vitro assessments confirm that Iris pallida extract (IPE) exhibited no toxicity to human dermal fibroblasts or HaCaT cells at concentrations up to 200 µg/mL. Independent safety evaluations by SkinSAFE categorize 'Iris Pallida (Sweet Iris) Leaf Cell Extract' as 'Teen SAFE', 'Lip SAFE', 'Baby SAFE', and 'Eyelid SAFE', additionally noting it as 'Irritant Free', indicative of an excellent safety profile for a wide range of skin types, including sensitive skin.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Iris Pallida Leaf Cell Extract is a valuable, evidence-backed ingredient for advanced skincare, uniquely addressing stress-induced skin aging by promoting significant collagen and hyaluronic acid production, while demonstrating a highly favorable safety and compatibility profile across all skin types.
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References
Sources